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INTRODUCTION
As of the 1st of May, 2000, the hepatitis B vaccine for
all newborns has been added to the Australian Standard Vaccination
Schedule (ASVS) 2000-2002.1 The
Australian Government has endorsed this vaccination program which
encourages all parents to allow their newborn babies to receive a
shot of hepatitis B vaccine in the days shortly after birth. The
new policy has come in response to World Health Organisation (WHO)
recommendations for all governments to implement universal hepatitis
B vaccination in an attempt to eradicate the hepatitis B virus (HBV) globally.2 Nearly
100 countries, including most of Europe and North America have implemented
a policy of universal hepatitis B vaccination. 3
The United Kingdom (UK),
however, is one of the few Western European countries that have
chosen to NOT comply with WHO recommendations, preferring instead
to control HBV by using a policy of selective vaccination of
persons in high-risk groups.4 Expectably, the UK’s position
on this issue has not been retained without controversy.3,5,6
In the UK (and Australia) the carriage rate
of HBV is very low and the vast majority of new HBV infections
occur in adults.4,7 Very
few infections are acquired in childhood, the exception being
for infants born to mothers who are “carriers” of
HBV (ie “vertical transmission” from mother to baby).
Universal infant hepatitis B vaccination in countries such as
the UK can only prevent a very small number of childhood infections.
Therefore policy makers have considered that universal infant
hepatitis B vaccination would not be a cost-effective measure
in the UK.3 Instead, they believe
that a policy of universal antenatal screening,
that tests all pregnant women for HBV, to be a better use of
finite resources.6 This will effectively
identify babies at risk of maternal transmission of HBV at birth,
allowing for selective vaccination of those babies to occur.
Dedicated follow up surveillance systems need to be in place
in order to ensure that a high compliance with the hepatitis
B vaccination regimen is achieved.3
In recent years the revelation that hepatitis B
vaccine may be a cause of serious long-term adverse events has
also led to continued debate in the USA as to whether a policy
of universal infant hepatitis B vaccination should continue to
be upheld.8,9
THE AUSTRALIAN STANDARD VACCINATION SCHEDULE (ASVS)
All babies born after May 1st, 2000 will be offered
4 doses of hepatitis B vaccine, the first dose being given while the baby is
still in hospital. For babies living in NSW, QLD, SA, ACT and NT, follow up
doses will be given at 2, 4 and 6 months in combination with DTPa vaccine (Infanrix-HepB™).
Babies living in VIC, TAS and WA will be given follow up doses at 2, 4 and
12 months in combination with Haemophilus influenzae type b (Hib) vaccine (Comvax™).1
Children born before May 1st, 2000 will not receive
hepatitis B vaccine until they reach adolescence (10-13 years old),
unless they come from a high risk group in which case they will
receive the vaccine from birth. The adolescent hepatitis B vaccination
schedule is different from the newborn schedule in that only 3
doses are given (as compared to 4 doses). The 2nd dose will be
given 1 month after the initial dose and then the 3rd dose will
follow on 5 months after the 2nd dose.1
THE DISEASE
In infants and young children, infection with HBV may cause acute
symptoms (usually mild) of hepatitis (inflammation of the liver)
in only 5% of cases.7 The risk of HBV causing symptomatic infection
increases with age with a reported rate of up to about 50% in
adults.1,7 Symptoms of the acute illness can include loss of
appetite, fever, nausea, abdominal pain, fatigue, myalgia (sore
muscles), arthralgia (joint pain), skin rashes, pale faeces,
dark urine and jaundice (yellowing of the eyes and skin).1
Following acute infection with HBV, about 1 to 12% of adults can become
chronic “carriers”.1 Carriers
are also described as being “hepatitis B surface antigen” (HBsAg)
positive. HBsAg is the outer protein coat of the HBV. Depending on the level
of “infectivity” of the carrier mother, infants have a higher chance
than adults of becoming carriers of the virus for many years. The level of
infectivity (apart from the presence of HBsAg), is determined by the presence
of hepatitis B e antigen (HBeAg) in the mother’s blood. Women who are
HBeAg-positive have a 50% to 90% risk of transmitting HBV to their baby, while
HBeAg-negative women have a substantially lowered risk of from 5% to 10%.7,10
While carriers usually remain free of symptoms they can continue to spread
the virus to other people. It is estimated that up to 25% of carriers are also
at risk of developing liver failure (from cirrhosis) and hepatocellular carcinoma
(liver cancer) in the future.1 Therefore hepatitis
B vaccine has also been strongly promoted as an “anti-cancer” vaccine.11,12
Frequency of HBV infection
and patterns of transmission vary markedly in various parts of
the world. For example, in areas such as South-East Asia and
Central Africa most people acquire infection at birth or during
childhood and the carrier rate can exceed 10%. This is in contrast
to countries such as Australia, UK, Northern Europe and the US
where HBV infection occurs primarily in adulthood, with very
low carrier rates of only 0.1 – 0.2%
of the caucasian population.1,7,13
RISK FACTORS FOR CONTRACTING
HEPATITIS B
HBV is primarily found in blood and other bodily fluids such as vaginal secretions
and semen. Its main routes of transmission are via sexual contact, sharing
of contaminated needles, needle stick injuries and from infected mothers to
their babies during birth.1
The NHMRC (National Health and Medical Research Council) strongly recommends
that hepatitis B vaccination be given to people in “high
risk” groups such as:
- Infants born to carrier mothers. HBsAg is routinely tested for during pregnancy.
- Infants born to HBsAg negative mothers who belong to communities with a HBV
carrier rate over 2%, such as Aboriginal or Asian populations.
- Sexual contacts of known HBsAg positive carriers.
- Sexually active male homosexuals, and clients of STD (sexually transmitted
disease) clinics.
- Injecting drug users (IDU’s).
- Haemodialysis patients.
- Recipients of certain blood products (eg clotting factors for haemophiliacs).
- Health-Care workers and embalmers.
The NHMRC HAVE NOT provided parents with
full information about the risks of contracting hepatitis B.
They have made the following statement in a parent information
leaflet:
“Hepatitis B is a serious disease that can be contracted throughout life……With
the new infant vaccination program your baby will be protected from hepatitis
B throughout infancy and early childhood when the risk of becoming a hepatitis
B carrier is highest.” 14
This is a misleading statement. It is true that the risk of “becoming
a hepatitis B carrier” may be increased in early childhood, but only
if they are actually exposed to the HBV. Considering the fact that babies
and children do not normally engage in high risk practices (ie unsafe sex or
injection of illicit drugs), they are therefore classed as being at a very
low risk of acquiring HBV infection. Therefore for the vast majority of infants
who are not in a high-risk group, the REAL RISK of being exposed to the HBV
is very near to zero. Hence the chance of an infant or child also becoming
a HBV carrier is also extremely low.
Some would argue that
all children should have this vaccine because there is a risk
of “horizontal transmission” (eg
from one child to another child) of HBV from contact with cuts
or abrasions or by sharing toothbrushes. Saliva may carry levels
of the virus, however it is unlikely to be infective unless it
is injected directly into tissue. Contact sports also carry a very
low risk of transmission.1
There is also concern that HBV infection could
occur from a needle stick injury, such as accidentally stepping
onto a discarded syringe. This would have to be a very remote
risk. And in the unfortunate, but very rare, instance of this
occurring, then exposure to HBV infection will not be the only
worry. Hepatitis B vaccine will not protect against HIV,
thought to be up to 3% in the injecting drug user (IDU) population.
Neither will it protect against the hepatitis C virus,
which has a very high prevalence of about 65% in the Australian
IDU population. This is in comparison to prevalence of HBV infection
in IDU’s of about 45%.15,16
The best preventative measures to halt the spread
of HBV (as well as hepatitis C and HIV) is to promote the practice of “safe
sex” (by using condoms) and the use of clean needles by IDU’s.
If a person chooses not to follow these precautions, then even if they
are “protected” against HBV, the hepatitis B vaccine will not
be of much benefit if they eventually need a liver transplant from complications
arising from hepatitis C infection, or develop AIDS from HIV.
If the Australian and USA governments think that our
children should have hepatitis B vaccine, then no doubt we will also be
told that it is in their best interests for them to also be injected with
vaccines for hepatitis C and HIV as well. What is to stop the NHMRC from
also added these vaccines to the ASVS and allowing them to be given to
all newborns, once they have been put on the market? One wonders where
it will all end. No one knows exactly how many vaccines an individual infant
will be able to safely tolerate before they shows signs of acute and chronic
damage to their developing neurological and immune systems. For some infants
just a single dose of vaccine is enough to cause permanent brain damage.
Other children may be able to tolerate many vaccines without any obvious
adverse effects. There may be many reasons for why this occurs, but it
would seem likely that some children will have a genetic pre-disposition
for being unable to tolerate a particular vaccine. Unfortunately, at present
there is no way of screening out which children are more likely to react
badly. So the practice of vaccination for all infants
has become a game
of Russian roulette. And it is inevitable that some will be losers.
LONG TERM IMMUNITY FROM THE VACCINE
Hepatitis B vaccination is regarded as being “seroprotective” if hepatitis
B surface antibody levels (anti-HBs) exceed 10 mIU/mL.17
It is estimated that about 95% of healthy adults will achieve adequate anti-HBs
levels after 3 doses of the hepatitis B vaccine. Around 5 % of fully vaccinated
individuals will not produce detectable anti-HBs. These people are called “non-responders” and
are at the same risk as non-vaccinated individuals of acquiring HBV infection.
It has been shown that non-response to hepatitis B vaccination is associated
with a genetic predisposition (inheritance of a recessive gene). A further
10% of fully vaccinated individuals who produce only low levels of anti-HBs
(10 to 100 mIU/mL) are called “hyporesponders”.18,19
Clinical studies performed in only very limited numbers
of children have shown that seroprotection occurs in about 99% of infants
under 1 year of age, who receive 3 doses of the vaccine.20 It
was previously recommended in the last Australian Immunisation Handbook
(6th Edition, 1997) that high risk babies need only receive 3 doses of
the hepatitis B vaccine at 0,1 & 6 months. Yet the NHMRC is now recommending
in the latest handbook (7th Edition, 2000) that all babies should receive
4 doses at 0, 2, 4 and 6 or 12 months of age.1 Why
is an extra 4th dose now indicated? Is this just another way for vaccine
manufacturers to generate increased profits?
Premature infants less than 32 weeks gestation have
a poorer immunological response to the hepatitis B vaccine than term babies.
Therefore the NHMRC recommends that these babies receive a total of 5 doses
at 0,2,4,6 & 12 months. This is to enable a greater percentage of premature
babies to achieve protective levels of anti-HBs. Alternatively, hepatitis
B vaccination in low risk premature babies can be delayed until when the
baby is 2 months old, and be given as a 4 dose schedule at 2,4,6 & 12
months.1
Between 30-50% of persons who develop adequate antibody after 3 doses of
vaccine will loose detectable antibody within 7 years.13 So
there is a concern that many children vaccinated as babies will not have a
measurable level of anti-HBs by the time they are 7 years of age. Therefore
hepatitis B vaccination of babies would seem to be of little benefit if immunity
wears off while they are still in early childhood. So the question remains
as to whether hepatitis B vaccine given in infancy, without the use of boosters,
will still protect people if they engage in high-risk activities when they
become adults. However, the NHMRC state that:
“Babies who have been fully vaccinated against hepatitis B will not require
adolescent hepatitis B vaccination or boosters. There is good evidence to show
that people who complete a course of hepatitis B vaccination have long lasting
immunity.”14
This is an assumption that is based on the theory of '‘immunological
memory”, which proposes that immunity continues to persist for
long periods despite falls in anti-HBs levels to below 10 mIU/mL. The immune
system is thought to be able to provide long term protection because there
remains a pool of “memory B lymphocytes” (a type of white blood
cell) circulating in the blood. On exposure to the HBV, the memory B cells “remember” from
years ago any previous exposure to the HBsAg from the vaccine, and can then
proliferate and produce anti-HBs within days.21
The theory of immunological memory originally arose from a study that examined
the long-term immunity of hepatitis B vaccine in adult homosexual men who were
followed up for 5 years.22 The results of
this study showed that sub-clinical infection with HBV can occur after vaccination
(about 7% of total vaccinated), as demonstrated by the appearance of “core antibody” (anti-HBc)
to HBV in serum. (This would be in comparison to the appearance of “surface
antibody” (anti-HBs) that occurs in response to vaccination.) Most of
the infections occurred among those who were classed as being either a non-responder
or a hypo-responder to the vaccine. The risk of infection with HBV was markedly
increased in those individuals with an initially adequate response to the vaccine,
but whose anti-HBs levels had fallen to below 10 mIU/mL. However sub-clinical
infection with HBV was only rarely associated with acute hepatitis B disease
(about 1% of total vaccinated). So while the vaccine was not able to prevent
HBV “infection”, it was theorized that the vaccine would provide
long-term protection from clinically significant “disease”.23
It should also be noted that 2 out of the 55 men infected with HBV (3.6%)
became carriers.22 Therefore fully vaccinated individuals with sub-acute
infection may still become carriers of the HBV even if the incidence of
the acute disease is reduced. And it is HBV carriers, not those who have
symptoms of acute HBV disease, who are most at risk of death from cirrhosis
or liver cancer.1 There has also been a report of a child (born to a carrier
mother) in whom vaccination had initially achieved “seroprotection” but
who then became a carrier at 5 years of age, after the anti-HBs level had
fallen to below 10 mIU/mL at 2 years of age.24
It has been suggested that immunological memory from hepatitis B vaccine
is evident from the large and rapid increases in anti-HBs that occur following
booster vaccinations, even in people who have previously lost antibody. Other
in vitro (artificial test-tube environment) studies have shown that the number
of memory B cells able to produce anti-HBs does not diminish as anti-HBs levels
decline.25 However, there is still a theoretical
risk that the delay between infection with HBV, and the subsequent stimulation
of memory B cells to produce anti-HBs, may allow for infection of hepatocytes
(liver cells) to occur.21
Clinically significant breakthrough infections in immunocompromised individuals
(eg HIV positive and renal transplant patients)26 have
demonstrated that this group can not rely on immunological memory to provide
long term protection. Therefore boosters are recommended for immunocompromised
individuals to maintain anti-HBs above 10 mIU/mL.21
The NHMRC expects the hepatitis B vaccine to provide protection from clinically
significant hepatitis B disease and a carrier state for many decades, from
birth to throughout adulthood, without the use of boosters. Studies to date
have suggested that immunological memory in children vaccinated as infants
would seem to last for at least 15 years.21,27 However,
since the highest rate of HBV infection in Australia occurs in the 20-40 year
old age group7, it is clear that much longer follow-up studies in high-risk
populations will need to continue in order to determine how many years theoretical
protection via the immunological memory mechanism could be expected to last.
In the light of the above statement to parents by the NHMRC, the approved Product
Information for Engerix-B (March 1999) is more cautious about making claims
of long term immunity:
“It is not known whether individuals who have responded to the
vaccine will require boosters to ensure long term protection or whether
natural boosting without symptoms and chronic infection will occur when
vaccinees with anti-HBs titres below the protective level of 10 IU/L are
exposed to the virus. Until such time as there is sufficient evidence to
clarify the situation, it would seem wise to recommend a booster dose when
the anti-HBs level falls below 10 IU/L.”17
Of growing concern is the emergence of HBV mutants, most frequently
the “G145R” variant. A study in Taiwan found that in the 10 years
after the introduction of universal hepatitis B vaccination, the prevalence
of mutant HBsAg varieties in children identified with HBV infection had more
than tripled from 7.8% in 1984 to 28.1% in 1994. The prevalence of mutants
in those diagnosed with HBV infection was higher among the fully vaccinated
children (36%) than among the unvaccinated (10%).28
Another study from Singapore found that the G145R mutant could be transmitted
horizontally from family members to vaccinated infants even in the presence
of high levels of anti-HBs. Liver damage was seen in one infant who was a carrier
of G145R.29
It is not clear whether the hepatitis B vaccine will be able to provide
protection against the growing problem of mutant varieties of HBV. It has
therefore been suggested that new vaccination strategies such as the inclusion
of additional antigens into the hepatitis B vaccine, capable of generating
production of antibodies to the most common HBV mutants, should be considered.28,30
By the time vaccinated babies become young adults, and move into an age
group whereby they are more likely to engage in high risk activities, there
is a possibility that immunity from the vaccine will be very low. This
could be due to either an initial non-response to the vaccine, loss of
seroprotective levels of anti-HBs, waning immunological memory or the emergence
of HBV mutants resistant to the current hepatitis B vaccine. At the present
time, the use of hepatitis B vaccine in all infants is experimental. Only
time will tell whether adults who have been fully vaccinated as babies
will be protected from acute hepatitis B disease and from becoming carriers.
IS THEIR A “NEED” FOR HEPATITIS
B VACCINE IN LOW RISK INFANTS?
The government is pushing hepatitis B vaccine on little babies as part
of the long-term “strategy” to eliminate HBV from the general population.
The results of this programme will take many decades to evaluate. It has been
suggested that the reason why selective vaccination programs targeting high
risk groups (eg male homosexuals, sexually promiscuous heterosexuals, IDU’s
etc) have not been successful in eliminating HBV is not because of “vaccine
failure”, but because of “failure to vaccinate”. In other
words, they are saying that the reason for the failure is because uptake of
the vaccine in high risk adult groups has been low.3,11 Hence
they have decided that the only way to control the problem is to vaccinate
the entire population. As if it was not enough that the vaccine was already
offered to all high school students in year 8. Now, in an effort to expand
the market of this vaccine, manufacturers have successfully convinced medical “experts” from
organizations such as the NHMRC that the best way to control the problem is
to universally vaccinate all newborns.
Newborn babies have been targeted for hepatitis B vaccination, NOT
because they are at risk of contracting HBV, but because they are easily “accessible” while
they are still in hospital. From a “compliance” point of view,
it is simply easier to get all babies to take the vaccine, rather than trying
to target high risk groups in whom full vaccination (with 3 doses) is much
more difficult to achieve.3
In November 1991 the “Centers for Disease Control and Prevention” (CDC)
recommended universal hepatitis B vaccination for all infants in the USA. In
the months following the implementation of this new recommendation, surveys
were sent to family doctors and paediatricians to assess the effect on clinical
practice. The studies found that only 17% of family doctors and only 32% of
paediatricians in the North Carolina area believed that universal hepatitis
B vaccination was warranted in their practice.31,32
Universal hepatitis B vaccination for all newborns is a policy that is based
on convenience and opportunity, not need. This is quite evident from
the fact that in Australia there are now two concurrent hepatitis B vaccination
schedules. Babies born before May, 2000 are not required to have the vaccine
until they are 10 –13 years old. If HBV infection was ever considered
to be a real risk for children in Australia, then the NHMRC would be strongly
recommending that the vaccine be given to all young children. Clearly this
is not the case since it is currently recommended that the vaccine only be
given to babies born after May 1st, 2000.1 This
double standard, with regards to the two concurrent hepatitis B vaccination
schedules, clearly demonstrates that children in low risk groups do not need
the vaccine from infancy.
CONTENTS OF THE HEPATITIS B VACCINES FOR YOUNG CHILDREN
Paediatric Engerix-B™ - SmithKline Beecham (SKB):
Hepatitis B surface antigen protein 10mcg
Aluminium hydroxide 0.25mg, *Thiomersal 0.005% = 25mcg, Sodium Chloride 0.9%
to 0.5mL.
(*Note: Engerix-B is now also available as a thiomersal free formulation.)
Paediatric “preservative free” H-B-VAX II™ - Merck Sharp & Dohme
(MSD):
Hepatitis B surface antigen protein 5mcg
Aluminium hydroxide 0.25mg, Formaldehyde solution 0.5 – 10mcg
Borax 35mcg, Potassium Thiocyanate 0.05 – 0.25mcg, Sodium Chloride 0.9%
to 0.5mL
Infanrix-HepB™ - (SKB):
Hepatitis B surface antigen protein 10mcg
Diphtheria toxoid 25 Lf, tetanus toxoid 10 Lf, pertussis toxoid 25mcg, pertussis
filamentous haemagglutinin 25mcg, pertactin 8mcg
Aluminium hydroxide 0.5mg and aluminium phosphate 0.2mg,
Formaldehyde <1mcg, Phenoxyethanol 2.5mcg (used as a preservative), Sodium
chloride 0.9% to 0.5mL
Preservative free Comvax™ - (MSD):
Hepatitis B surface antigen protein 5mcg
Purified capsular polysaccharide (PRP) of the Ross Haemophilus influenzae type
b strain 7.5mcg conjugated to meningococcal protein 125mcg (OMPC)
Aluminium 0.225mg (as Aluminium hydroxide), Borax 35mcg (used as a pH stabiliser),
Sodium Chloride 0.9% to 0.5mL
The hepatitis B vaccine in use today is a recombinant (genetically engineered)
DNA vaccine. It contains a small portion of the HBV and does not contain the
whole live virus (unlike MMR or oral polio vaccines). It is therefore classed
as being a “non-infectious” type of vaccine. It is made by harvesting
the surface antigen (HBsAg) of the HBV that is produced from cultures of yeast
cells (Saccharomyces cerevisiae) which have been genetically engineered to
contain the relevant HBsAg gene.17 Hypersensitivity
to yeast is listed as a contraindication to the hepatitis B vaccine.20
Engerix-B contains a preservative called thiomersal (also
known as thimerosal) that has been used since the 1930’s to prevent bacterial
contamination in many common vaccines (eg DTPw, DT, tetanus, Hep B, Hib, Influenza).
Thiomersal is a compound that is 50% by weight mercury.33
Mercury is a heavy metal that is easily able to cross the placenta and the
blood-brain barrier to reach brain tissue.34 Mercury
levels have been shown to significantly increase after vaccination with a hepatitis
B vaccine containing thiomersal, especially in premature infants.35 There
have been reports of severe mental and neurological impairment occurring in
children exposed to mercury in-utero (during pregnancy).36,37 It
would appear that an infant is most sensitive to the neurotoxic effects of
mercury during the pre and post-natal periods when processes of neuronal cell
division and development are very active. Neurotoxic effects can range from
cerebral palsy, hearing loss, visual impairment, ataxia (loss of muscle co-ordination)
to mental retardation.34,38 Subtle
developmental delays (with motor function, language and memory) have even been
found to occur in children prenatally exposed to levels of mercury previously
thought to be “safe”.39 Therefore
common sense would suggest that the only “safe” level of mercury
exposure in infants is nil. Research is also currently looking into the potential
for neurotoxic chemicals, such as lead and methylmercury, to induce neurobehavioural
problems such as attention deficit hyperactivity disorder (ADHD).40
There is strong evidence that heavy metals such as
mercury and gold can induce auto-immune disease in humans and experimental
animals (rats and mice).41 Mercury
compounds are thought to act as an environmental trigger, strongly stimulating
auto-antibody production and the differentiation of auto-reactive T cells
towards a pathogenic pathway that leads to the development of auto-immune
disease in genetically susceptible individuals.42,43
There is also evidence that low levels of exposure
to mercury compounds can be toxic to the human immune system, causing death
of T-cell lymphocytes (white blood cells).44 Mercury
has also been shown to affect the immune system by increasing levels of
the IgE antibody.45 IgE
antibodies are known to be increased in people with asthma, allergies,
hayfever and ezcema.46 Acute
exacerbations of atopic dermatitis (eczema) in infants, ages ranging from
7 to 28 months, has been reported to occur 2-10 days after vaccination
with thiomersal containing vaccines. These infants all tested positive
to patch tests that demonstrated hypersensitivity to thiomersal.47 Severe
skin hypersensitivity reactions attributed to thiomersal allergy have also
been reported specifically following hepatitis B vaccination.48,49
In July 1999, the CDC in the USA announced that they
have asked vaccine manufacturers to remove thiomersal from all vaccines
as soon as possible, due to the theoretical risk that young babies may
receive a level of mercury from vaccines that is above the “safe” limit.50
So in response to this mandate the manufacturer SKB has formulated a “preservative
free” hepatitis B vaccine (H-B-VAX II) for newborn babies. This all
sounds very nice, but if parents read the list of ingredients they will
notice that the vaccine contains far more than just HBsAg and could hardly
be described as being non-toxic and “safe”.
Aluminium has no clear biological
role in the human body and may take many years to be eliminated.51 It
is used in many vaccines as an adjuvant, allowing for high antibody levels
to be obtained by using a minimal dose of the antigen and a reduced number
of inoculations.52 The
HBsAg particles are absorbed onto aluminium hydroxide gel which stimulates
a stronger immune response than if free antigen was used alone. The aluminum
adjuvant also has the effect of acting like a “depot” which
allows the antigen stimulus to persist for longer in the body.
Aluminium, like mercury, is a heavy metal that may
also be capable of triggering auto-immune disease.43 Furthermore,
many studies have shown that aluminum adjuvants strongly induce the production
of the IgE antibody in mice,53-56 rats,57,58 guinea
pigs,59 as
well as humans.60-63 It
does this by stimulating the immune system to produce an exaggerated Th2
response (T helper cell type 2) that acts to promote the synthesis of IgE
antibodies by B cells.64-67 As mentioned previously, IgE antibodies are
increased in individuals with atopic diseases such as eczema, hayfever
or asthma. It has therefore been proposed that vaccines, especially those
containing aluminium adjuvants (such as tetanus,53,55,56,59,60,68
DT61,63,69-71, DTPa or DTPw,58,62,72-75 Hib,
Hib-HepB, Hep B or DTPa-HepB), may be an environmental factor that has
contributed to the large increase in rates of atopic diseases over the
last 30 years.59,76-78 Allergy
or sensitization to aluminium has also been shown to occur after repeated
exposure to DTP vaccines.79,80
Aluminium is readily transported into
brain tissue81 and is well known to be a neurotoxic substance in animals
and humans.82-84 Aluminium
may be retained in the brain for prolonged periods suggesting that accumulation
may occur with repeated exposure.84 Injection
of aluminium into animals has been shown to produce behavioural, neuropathological
and neurochemical changes partially similar to Alzheimer’s disease.84
Long-term impairment of neurological development in premature infants has
been associated with exposure to aluminium contained in intravenous feeding
solutions. The study showed that an increase in exposure to aluminium increased
the risk of decreased mental development, with the potential to contribute
to future educational problems.85
Post vaccination granuloma is a vaccine reaction caused by aluminium adjuvants,
in which chronically inflamed nodules develop under the skin surface at the
site of the injection.86,87
The use of aluminium adjuvants in vaccines is increasingly coming under question
by scientists.88 In recent years, aluminium from vaccines has been linked with “macrophagic
myofasciitis” (MMF), an emerging clinical condition that was
first reported in the medical literature in 1998.89 The spate of recent cases
of MMF in France might be explained by the governments decision to vaccinate
nearly 40 million adults with the hepatitis B vaccine several years ago.
Patients with MMF complain of widely spread myalgia
(sore muscles), arthralgia (sore joints), muscle weakness, fever and fatigue.
Muscle biopsies from patients with MMF have showed unusual tightly packed
aggregations of macrophages (large cells that cleanse the body by engulfing
and killing foreign material).89 Interestingly,
the macrophages contained high amounts of aluminium, even though serum
aluminium levels were normal, suggesting an impaired ability to clear aluminium
from the deltoid muscle.90 Measurable quantities of aluminium have been
shown to remain at the vaccine injection site for periods of up to 8 years
in some patients.88
The site of the muscle biopsy is important for demonstrating
the typical pathological features that will influence the correct diagnosis
of MMF. There has been a report of a 45-year-old female patient who, having
had a negative biopsy of the right deltoid (upper arm), then had a positive
muscle biopsy in the left deltoid, the same side that was previously injected
with the hepatitis B vaccine. Likewise, her 11-year-old son who was also
diagnosed with MMF gave a positive muscle biopsy result from the same side
(left deltoid) that had been injected with hepatitis B vaccine. Because
MMF is a very rare condition the occurrence in 2 close family members strongly
suggests that a genetic predisposition may exist in some individuals.91
Of even further controversy is the observation that
a sizeable portion (9%) of the patients diagnosed with MMF also developed
clinical symptoms and had MRI (Magnetic Resonance Imaging) findings that
were definitive of multiple sclerosis (MS).92 Aluminium
containing vaccines (hepatitis B and/or tetanus) had been administered
from 15 days to 4 years before symptoms of myalgia had begun. CNS symptoms
started from 3 months to 5 years after vaccination. Aluminium adjuvants
in vaccines may be a common predisposing environmental factor leading to
the development of MMF and MS in some individuals. MMF is also occasionally
associated with other autoimmune disorders such as systemic lupus erythematosus
(SLE), rheumatoid arthritis and Hashimoto’s thyroiditis.89 The
authors believe that these findings should be taken into account with the
recent and controversial debate that hepatitis B vaccine may be a cause
of MS. They conclude by suggesting that deltoid muscle biopsy should be
performed in MS patients with mylagias to look for myopathological changes
suggestive of MMF.92
The replacement of aluminium with less harmful adjuvants
continues to be investigated by vaccine researchers.93-95
Formaldehyde is a widely used chemical
in pressed wood products, disinfectants and as a fixative to preserve tissues
(eg embalming of bodies). During the manufacture of the hepatitis B vaccine,
antigen particles are treated with formaldehyde during the sterilization
process before they are adsorbed onto aluminium hydroxide. Formaldehyde
is a known carcinogen and is thought to be a cause of some types of cancer.96,97
Exposure to formaldehyde vapour can cause symptoms such as skin rash, headaches,
nose bleeds, fatigue, cough, burning eyes and IgE-mediated sensitization.98
Hypersensitivity to formaldehyde has also been associated with eczema in
haemodialysis patients.99
Phenoxyethanol
is used as a preservative in Infanrix (DTPa) and Infanrix-HepB (DTPa-Hep
B) vaccines. There has been a report of generalized eczema occurring in
an 18-month-old boy attributable to phenoxyethanol contained in a DTP vaccine.100
Once sensitisation to vaccine allergens such
as thiomersal, aluminium, formaldehyde and phenoxyethanol has occurred,
re-exposure to only minute quantities of the allergen is enough to be able
to trigger an allergic reaction or cause exacerbations of IgE mediated
diseases such as asthma or eczema. Sensitisation to vaccines is demonstrated
by the observation that the rate and severity of local reactions (eg red,
painful swelling of the entire injected limb with DTPa) increases with
each successive dose.101,102
Parents need to seriously consider whether they should
consent for their baby to be injected with a vaccine containing toxic and
potentially damaging ingredients. It is known that an infant’s immune
and neurological systems are not fully developed. There is concern that
babies (especially premature) are vulnerable to damage to the nerves in
the brain, since at birth relatively few nerve pathways have a “myelin
sheath”. Myelin is a fatty substance that coats the nerve fibers
and acts as insulation and as a protective covering. The myelin helps to
confine the electrical impulses along the nerve fiber and allows the impulses
to travel much more quickly.
The process of “myelination” (laying down of myelin)
in the human brain continues from before birth until adulthood. Vaccination
exposes unprotected nerves (especially in young infants) to damage from toxic
ingredients such as aluminium, mercury and foreign proteins. Vaccination may
also cause “demyelination” (destruction of existing
myelin) or prevent normal myelination of nerves. From one degree to another,
this can have long lasting effects on neurological development and on patterns
of learning and behaviour.
It is well known that vaccines (especially DTP) can
cause seizures, acute encephalopathy (degenerative disease of the brain)
and permanent brain damage. If this is the case, then it is also possible
that vaccines may cause a mild or sub-acute form of encephalopathy that
could manifest itself in various neurological conditions such as epilepsy,
autism or ADHD.
So what evidence is there to suggest that the hepatitis
B vaccine DOES NOT have the potential to contribute to the development
of neurological and immune system diseases? Long-term studies assessing
the adverse effects of hepatitis B vaccine in newborns is an area of vaccine
research that is greatly lacking.
SIDE EFFECTS OF THE HEPATITIS B VACCINE
Parents can be expected to be told by vaccination providers
(usually a midwife or doctor) that the hepatitis B vaccine may cause reactions
such as low grade fever, soreness, redness and swelling, nausea, feeling unwell
and joint pain.1 But what parents are not told is that infants and young children
have a much greater chance of experiencing a severe adverse reaction to hepatitis
B vaccine than they ever will of contacting the HBV. Parents have the right
to be informed that these reactions can include things such as:
- anaphylaxis (a life threatening allergic reaction)103
- severe skin rashes or eruptions such as erythema
multiforma17 or lichen planus104 (bluish
purple flat skin lesions lasting from 6 months to 2 years)
- transient liver dysfunction.105
- thrombocytopenia purpura, (an autoimmune disorder that
leads to destruction of platelets and bleeding into the skin, characterized
by small red spots called “petechia”).106-108
- pancytopenia (insufficient production of red and
white blood cells from bone marrow; also known as aplastic anaemia)109
-chronic fatigue syndrome (CFS) or myalgic encephalomyelitis
(ME) (symptoms such as exhaustion, muscle fatigue, aches, co-ordination
and balance problems or memory loss).110,111
- reactive arthritis (joint symptoms such as swelling,
pain and stiffness lasting for many months)112
- vascular diseases such as vasculitis (inflammation
of blood vessels)113 or
Churg-Strauss vasculitis (where development of asthma and/or sinus problems
often precedes evidence of vasculitis and eosinophilia)114
-glomerulonephritis (inflammation in the kidneys).103,115
- hair loss116,117
Auto-immune disorders118 Type
1 juvenile diabetes mellitus (insulin dependant diabetes mellitus – IDDM)119,120
Systemic lupus erythematosus (SLE)103 (a
systemic disease in which many tissues and cells in the body are damaged
by pathogenic auto-antibodies and immune complexes.) Sjögren’s
syndrome (destruction of exocrine glands causing dry eyes, dry mouth, dry
cough; often associated with rheumatoid arthritis)121
rheumatoid arthritis.122,123 Research
as shown that hepatitis B vaccination may be more likely to trigger the
development of rheumatoid arthritis in individuals with a genetic susceptibility.124,125
Most recently, Fisher et al (2001) found that in children less than 6 years
of age, arthritis was up to 6 times more likely to occur in those who had
received hepatitis B vaccine (OR = 5.91).126.Otitis
media (acute ear infection) and pharyngitis/nasopharyngitis126,
loss of vision127,128 hearing
loss129 and tinnitus (ringing in the ears).17,129
Peripheral nervous system (PNS) demyelinating diseases
- paralysis17
- Bell’s palsy (involves the facial nerve causing
droopy eyelid and muscle paralysis on one side of the face)17
- Guillain-Barre syndrome (GBS) (also
known as “acute inflammatory demyelinating polyneuropathy”,
causing acute generalised weakness of muscles.)130-133
Central nervous system (CNS) demyelinating diseases
- Encephalopathy (degenerative disease of the brain)17
- Transverse myelitis (inflammation of the spinal cord
causing paralysis)134
Multiple sclerosis (MS)135-143 is
a condition characterised by chronic encephalitis (brain inflammation)
and CNS demyelination (encephalopathy) visualised on MRI scans. MS may
cause many symptoms ranging from: fatigue, weakness in limbs, ataxia (loss
of muscle coordination), spasticity, visual blurring (from optic neuritis),
diplopia (double vision), parasthesia (abnormal neurological sensations
such as tingling, “pins and needles”, burning), hypoaesthesia
(numbness), dysarthria (difficulty speaking), vertigo (dizziness), cognitive
dysfunction (eg memory loss, impaired attention), bladder or bowel dysfunction
(eg incontinence, constipation). MS usually follows a “multiphasic” course
where symptoms manifest as recurrent attacks (relapses) of neurological
dysfunction followed by complete or partial remissions.
Acute disseminated encephalomyelitis (ADEM)139,144
is a rare condition of sudden onset that is clinically very similar to
MS occurring most commonly following an acute viral infection (eg measles,
chickenpox) or vaccination (eg rabies, smallpox, measles). Unlike MS, ADEM
is an acute disease having a “monophasic” course that is generally
of a self-limiting nature. But relapses may occur, making it very difficult
to distinguish from MS. Severe cases may cause fever, headache, lethargy
progressing to coma, seizures, hemiparesis (paralysis affecting one side
of the body), quadriparesis (paralysis affecting all four limbs), meningismus
(irritation to the meninges, the layers surrounding the brain and spinal
cord) and may lead to permanent neurological disability or death.
- Optic neuritis (ON)130,139,145,146,
a demyelinating disease of the optic nerve causing visual blurring through
to blindness. ON is frequently found in patients with ADEM and MS.
- Symptoms suggestive of neurological involvement such
as prolonged screaming, an abnormal cry, agitation, apnoea (where breathing
stops for prolonged periods), acute cerebellar ataxia147 (loss of muscle co-ordination),
visual disturbances, convulsions, tremors, twitches, hypotonia, hypertonia,
abnormal sensations, stupor, drowsiness, dizziness, neck rigidity, confusion,
headache and oculogyric crisis (circular movements of the eyeballs).148
- Neonatal death (usually written off as “SIDS”).149
It should be noted that the ACTUAL number of serious
adverse events and deaths due to hepatitis B vaccine is likely to be many
times higher than the official numbers REPORTED. This is done in Australia
through the “Adverse Drug Reactions Advisory Committee” (ADRAC)
and in the USA through the “Vaccine Adverse Event Reporting System” (VAERS).
ADRAC and VAERS are both “passive” systems of reporting adverse
events to vaccines.150 A
passive system has a gross under-reporting of events compared to an “active” (mandatory)
system of surveillance, as would be used in controlled studies. It has
been estimated that as little as 1% to 10% of adverse effects are ACTUALLY
reported by doctors. Reasons for under-reporting can range from apathy,
lack of time to file the report to the health authorities, to lack of awareness
that the reaction could possibly be linked to the administration of the
vaccine.
In October 1998 the French government suspended use
of hepatitis B vaccine for school children after repeated reports of autoimmune
and neurological reactions. 15,000 French citizens have filed a lawsuit
against the French government accusing it of understating the vaccine’s
risks and exaggerating the benefits for the average person.151 The
courts have found in favour of many of these vaccine injuries.152
Yet any suggestion that hepatitis B vaccine is responsible
for being a cause of serious disorders such as MS or SIDS is always greeted
with a typical response from vaccine manufacturers and government policy
makers: Deny any causal association between case reports of serious adverse
events and the vaccine.149,153 Vaccine
manufacturers have a huge financial interest in promoting the widespread
use of vaccines. Any “vaccine scare” has the potential to pose
a serious threat to their profits. So it is obvious that their opinions
and “research” will always be heavily biased in favour of the “safety” of
the vaccine. Biased researchers can easily manipulate statistics and use
certain types of study methods that may mask any possible causal association
between serious adverse events and the vaccine.
While the CDC and vaccine manufacturers such as Merck and SmithKline Beecham
acknowledge that numerous case reports have demonstrated a “temporal
association” (in relation to the timing of onset of disease following
vaccination) between hepatitis B vaccination and MS, they will not accept that
this also means that there is a “causal relationship”.8,140,153
In other words, it has become very easy for them to write off the many case
reports of serious adverse events as occurring simply by “chance alone” and
are therefore only “coincidental”. They therefore feel justified
to constantly re-assure the public that vaccines are “safe” and
that “the benefits outweigh the risks”.
Groups such as the CDC who vigorously promote hepatitis B vaccination have
claimed that there is “no scientific evidence” to suggest that
hepatitis B vaccine is a cause of MS. Their blatant bias and the need to maintain
public confidence in government sponsored vaccination programmes have led them
to come to this conclusion based on three epidemiological studies.154-156 This
opinion is held in spite of the fact that the results of another three case-control
studies reported an increased risk of MS after hepatitis B vaccination.141-143
Numerous case reports in the medical literature have also shown a strong temporal
association.135-140 There are even case reports of similar symptoms of MS recurring
within weeks of individuals receiving all three consecutive shots of the vaccine.137,139
How much “coincidence” does one need before health authorities
acknowledge that such a strong temporal association does indeed also indicate
a causal association?
And there are still more questions and issues that
have not yet been addressed. For example; cases of acute disseminated
encephalomyelitis (ADEM), a condition very similar
to MS, have occurred following hepatitis B vaccination; the same cases
that have been later reclassified as MS after further
relapses occurred.139,144 There
is a fine line when distinguishing ADEM from the first episode of MS.157
Schwarz et al found that 35% of adult patients initially diagnosed with
ADEM later developed clinically definite MS over an observed period of
3 years.158 ADEM is well known to occur following vaccination, and is thought
to be caused by an auto-immune reaction to myelin proteins in the brain
triggered by exogenous antigen (from vaccines or virus).157 In
fact, ADEM and MS are considered to be clinical counterparts to “experimental
allergic encephalomyelitis” (EAE), also known as “experimental
autoimmune encephalomyelitis”, a condition that is induced in laboratory
rats and mice by vaccines.158 EAE
has most notably been induced with pertussis vaccine.159
Optic Neuritis (ON), a CNS demyelinating disease of
the optic nerve in the eye, has also occurred following hepatitis B vaccine.
130,139,145,146 Acute bacterial or viral infections and/or vaccination
often shortly precede the development of ON. It has been reported that
from about 20% to 50% of children with ON will later developed MS.146,160,161
Since cases of ADEM, MS and ON have been reported following
the use of hepatitis B vaccine, research should now focus on seeing if
this vaccine is also capable of inducing EAE in laboratory animals. As
previously mentioned, the other anomaly that needs further investigation
is the interesting association between the high proportion of macrophagic
myofasciitis (MMF) cases (9%) that also develop MS.92 MMF
has been linked by the WHO to vaccines that contain aluminium, most notably
the hepatitis B vaccine.90 Therefore
these findings should also be taken into account in the debate surrounding
hepatitis B vaccine and MS.92
Biologically plausible mechanisms add weight to the
many case reports of MS associated with hepatitis B vaccine, providing
further evidence for a positive causal association. “Molecular mimicry” is
one such hypothesis. Autoimmunity is induced when a person's own immune
system makes a “mistake” and confuses one of the body's own
proteins (auto-antigen) for a foreign protein (antigen). According to the
model of molecular mimicry, the immune system is stimulated to attack,
via auto-reactive T cells and/or auto-antibodies, it’s own protein
(self or auto-antigen) that has been copied or “mimicked” by
the foreign protein through the sharing of similar immunological epitopes
(sites on the surface of an antigen molecule to which a single antibody
molecule binds).162,163
Viral antigens have been identified as foreign proteins
capable of inducing autoimmunity, via the process of molecular mimicry.
The hepatitis B vaccine contains an exact replica of a protein antigen
found on the surface of the HBV, and has sequences of protein polypeptides
that are also present in neurological tissues such as myelin.164,165 Therefore
when the immune system is signaled to recognize and destroy protein sequences
found in HBsAg, it can also recognize a similar sequence of peptides found
in proteins contained in myelin tissue and will act to destroy it. Demyelination
of the myelin sheath then occurs, breaking it down to expose the nerve
axon resulting in neurological dysfunction. It would appear that sub-populations
of people with a particular genetic makeup are going to be susceptible
to developing autoimmune disorders from the hepatitis B vaccine.162
It has also been recognised that HBV infection can
be associated with cases of demyelinating diseases including transverse
myelitis166, optic neuritis167,168,
chronic inflammatory demyelinating polyneuropathy (CIDP)169-171 and
Guillain-Barre syndrome (GBS).171 It
has been proposed that HBsAg-immune complexes that deposit in the neuronal
tissue may play a role in causing conditions characterized by demyelinating
neuropathy.169-171. If
the HBV is able to cause autoimmunity, is it not feasible that the hepatitis
B vaccine would also be capable of inducing autoimmune diseases?172
CONCLUSION
It would appear that the real risk of having
a severe adverse reaction (in the short and long term) would have to greatly
outweigh any possible benefit that the hepatitis B vaccine has to offer.
The old cliché “the benefits outweigh the risks” can
in no way be applied to the use of hepatitis B vaccine in the majority
of neonates. The only party likely to benefit from a policy of universal
hepatitis B vaccination is vaccine manufacturers with the annual generation
of massive profits. However it is little babies and their parents who may
end up paying a very high price with chronic health problems, permanent
disability, and possibly even death.
Further information on hepatitis B vaccine can also
be found at:
http://www.avn.org.au,
http://www.ias.org.nz,
http://www.909shot.com or
http://www.vaccines.net.
APPENDIX: VITAMINK
Most babies in Australia are given an injection of 1mg vitamin K (Konakion® MM
Paediatric) shortly after birth to prevent "Vitamin K Deficiency Bleeding" (VKDB).
So parents should also consider whether they will consent for their baby to
be given two injections during the first few days of the baby's life. Hepatitis
B vaccine and vitamin K are both given by intramuscular (IM) injection, which
is an invasive and painful procedure. Therefore to reduce trauma to the baby's
limbs, the injections should be given separately in opposite legs. Alternatively,
vitamin K can be given as three oral doses of 2mg: The 1st dose at birth, the
2nd dose on day 3 to 5, and the 3rd dose on day 30.173 A small number of parents
have also chosen to not give any vitamin K prophylaxis to their infant. Parents
should discuss the pro's and con's of these options with their health care
provider before the birth of their baby.
ABBREVIATIONS:
ADHD = Attention deficit hyperactivity disorder
ADEM = Acute disseminated encephalomyelitis
ADRAC = Adverse Drug Reactions Advisory Committee
anti-HBs = hepatitis B virus surface antibodies
ASVS = Australian Standard Vaccination Schedule
CDC = Centers for Disease Control and Prevention (USA)
CNS = central nervous system
DT = diphtheria–tetanus vaccine
DTP = diphtheria–tetanus-pertussis vaccine
DTPw = diphtheria–tetanus-pertussis whole cell vaccine
DTPa = diphtheria–tetanus-pertussis acellular vaccine
EAE = experimental allergic encephalomyelitis
HBsAg = hepatitis B surface antigen
HBeAg = hepatitis B e antigen
HBV = hepatitis B virus
Hep B = hepatitis B
Hib = Haemophilus influenzae type b
IM = intra-muscular
MMF = macrophagic myofasciitis
MMR = measles, mumps & rubella vaccine
MRI = magnetic resonance imaging
MS = multiple sclerosis
MSD = Merck Sharp & Dohme
NHMRC = National Health and Medical Research Council
ON = optic neuritis
SIDS = sudden infant death syndrome
SKB = SmithKline Beecham
VAERS = Vaccine Adverse Event Reporting System (USA) WHO = World Health Organization
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