Home > Comments and Articles > Anti-immunisation scare: The inconvenient facts
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Year | Cases | Deaths |
1970 | 655 | 5 |
1971 | 206 | 4 |
1972 | 269 | 2 |
1973 | 364 | 4 |
1974 | 393 | 0 |
1975 | 1,084 | 5 |
1976 | 2,508 | 20 |
1977 | 5,450 | 20 |
1978 | 9,626 | 32 |
1979 | 13,092 | 41 |
Table 1.
Pertussis cases and deaths in Japan 1970-79.
Immunisation suspended in early 1975.
Data taken from Kanai31
In addition, it was reported that 90% of the 1975+ cases were in unvaccinated children.31 These figures were thought to clearly demonstrate "the importance and effectiveness of pertussis vaccine"32(p123), and also served to provide "convincing evidence that pertussis is still a fatal disease of babies...".31(p114)
On the basis of these figures no other conclusion is scientifically valid, and this is probably the reason why Dr Scheibner ignored the results.
Dr Scheibner’s review of the Japanese situation provides further support for the contention that her research methods are somewhat sloppy. For example, she mentions the two Japanese deaths and claims that following these "doctors in the Okayama Prefecture boycotted the vaccine."2(p46)
The two deaths in Japan occurred in December 1974 and January 1975. In the Okayama Prefecture doctors had not been using DPT vaccine since April 1973, because of concerns over adverse effects. This Prefecture experienced an epidemic in 1974 and in 1977 was considered a pertussis prevalent area.31 One can only wonder at the irony of Dr Scheibner’s comments later in her book:
Proponents of vaccination are so enmeshed in their belief in the efficacy of vaccines that they appear totally oblivious to evidence to the contrary."2(p53)
It would not be stretching things too far to suggest that this is the proverbial pot calling the kettle black!
Another of Dr Scheibner’s key points is the situation in Sweden, where immunisation against pertussis was suspended in 1979 in response to concerns about the efficacy of the vaccine then in use.33 It seems that we are supposed to conclude that because a country like Sweden stopped immunising their children all other countries should follow suit.
What Dr Scheibner may not want her readers to know, though, is that following suspension of immunisation there was an increase in reported cases of pertussis in Sweden.28 She also omits to explain why Sweden, if it is a country opposed to immunisation, has been so involved in research into newer pertussis vaccines?33 Why waste the time and money if they believe immunisation is ineffective?
Dr Scheibner apparently repeated her claims about Sweden when she appeared before the Human Rights and Equal Opportunities Commission in July 1996.1 It is difficult to understand how Dr Scheibner could appear as an expert witness on immunisation, and not be aware that in many areas of Sweden general immunisation against whooping cough was recommenced in 1995. This decision was based upon the results of trials of newer acellular vaccines, such as the one reported by Gustafsson et al.33
It is also difficult to understand how such an expert witness, who has "collected just about every publication written on the subject", could not be aware of Sweden’s experience with other immunisation programs.
For example, combined measles, mumps, rubella (MMR) immunisation was commenced in Sweden in 1982.34 Table 2 shows the resulting change in the number of hospitalized cases of measles and the number of cases of measles encephalitis.
If immunisation was not responsible for the post 1982 decline then what was?
Year | Cases | Encephalitis |
1981 | 372 | 15 |
1982 | 388 | 15 |
1983 | 248 | 8 |
1984 | 81 | 1 |
1985 | 9 | 0 |
1986 | 11 | 0 |
1987 | 10 | 0 |
Table 2.
Hospitalised measles cases, and encephalitis cases in Sweden.
MMR immunisation commenced in 1982.
>From Christenson.34
Another example is Hib vaccine, which was introduced in Sweden in 1992, and was accompanied by a rapid decline in the incidence of H. influenzae meningitis and bacteraemia.35 In the pre-vaccination period of 1987-91 the average annual incidence of these conditions was 34.4 per 100,000 children aged 0-4. By 1994 the incidence in this age group had fallen to 3.5 per 100, 000.35
Did Dr Scheibner mention these results when she appeared before the Human Rights and Equal Opportunities Commission?
One of the more important concerns regarding immunisation, particularly with the DTP, is a possible link with Sudden Infant Death Syndrome (SIDS).36 This is a matter of great concern to parents and health care workers alike, and it is important to carefully examine the available evidence?
The peak time for SIDS is between two and four months of age, which is also the recommended time for the first two doses of DTP. We would therefore expect many cases of SIDS to occur in close time proximity to immunisation merely by chance.
Particularly in those cases where autopsy is unable to identify a cause of death such a close temporal relationship, and the understandable need by grieving parents to understand why this happened to their child, are easily exploited by anti-immunisation advocates.
I will let readers of the Skeptic decide for themselves whether Dr Scheibner’s research in this area qualifies her for the title ‘expert witness’.
Dr Scheibner notes a 1982 report of four unexplained deaths that occurred in Tennessee in the late 1970s.37 She first attempts to draw a link between these deaths and immunisation:
All four deaths were classified as sudden infant death syndrome (SIDS), and all had received their first vaccination of diphtheria-tetanus toxoids-pertussis (DTP) vaccine and oral polio vaccine2(p59)
She is forced, however, to concede that the author of the paper found "no evidence to support a causal relationship."37(p421) In her discussion of this study she fails to mention that the author of the paper concluded:
The findings of our study combined with the NIH results provide no support for reducing efforts to immunise infants with DTP.37(p421)
Dr Scheibner then mentions the preliminary results of a study demonstrating a possible association between DTP and SIDS presented at a meeting in 1982.38 Though the final results of this study had not been published at the time of the publication of Dr Scheibner’s book (nor published since) she seems to be prepared to accept these preliminary results as sound science because they support her beliefs.
Dr Scheibner devotes nearly a whole page to this ‘study’ and only one sentence to formally published studies that found no link between SIDS and DPT.39,40 She also manages, in her discussion of SIDS, to ignore completely the Institute of Medicine Report discussing the DPT vaccine.36 This found no link between SIDS and DTP immunisation.
One of Dr Scheibner’s trump cards is her claim that in Japan, following the shift in age of immunisation to two years, the SIDS rate declined. She makes much of this in her book:
In 1975 Japan raised the minimum vaccination age to two years; this was followed by the virtual disappearance of cot death and infantile convulsions.2(pxix)
When Japan moved the vaccination age to two years, the entity of cot death in that country disappeared 2(p43)
The most important lesson from the Japanese experience is that when the vaccination age was moved to two years, the entity of cot death disappeared. 2(p49)
The seeming and widely perpetuated dilemma: ‘is there or is there not a causal relationship between DPT injections and cot death’ has, quite adequately and indeed without a shadow of a doubt, been resolved by the Japanese experience with cot death. 2(p62-3)
This claim of Dr Scheibner’s has been unquestioningly repeated in other anti-immunisation material.41-43
Dr Scheibner’s claim rests upon her analysis of two papers, one by Noble et al44 and the other by Cherry et al.28 After reviewing both these papers it is clear that Dr Scheibner’s analysis of them is at best sloppy, and at worst blatantly dishonest.
In Japan during the period concerned there was in place a Vaccine Compensation System, and the data presented by Noble and Cherry relate to claims made through this system.28,44 Compensation was commonly awarded for events considered possibly due to immunisation, unless there was clear evidence that this was not the case. Approximately two thirds of claims submitted were accepted.
Noble and Cherry both report that when the minimum immunisation age was moved from three months to two years there were no claims made through the compensation system for vaccine related sudden death.28,44 They do not claim, as Dr Scheibner suggests, that there were no deaths from SIDS in Japan following the change in immunisation age.
Claims for vaccine related sudden death stopped, not because children were no longer dying, but because their deaths no longer occurred during a period when they were also receiving immunisation. How can you claim for a vaccine-related death if no vaccine was given?
If Dr Scheibner is really claiming that no children in Japan died from SIDS once the DTP immunisation age was changed she provides no evidence to support this claim, and I do not believe she can.
The drop in compensation claims suggests that the purported reactions in infants were in large part unrelated developmental events expected commonly in that age group but attributed to vaccine because they were time related analysis of cases with paid claims in the Japanese national compensation system indicates many of the putative cases to be related to other medical conditions. 28(p973)
Additionally, if immunisation is ineffective, as Dr Scheibner claims, then the change in the minimum age of DTP immunisation from three months to two years should not have been associated with any change in the incidence of the disease.
On the other hand, if Dr Scheibner is wrong, and DTP immunisation protects children from pertussis, we would expect that a shift in minimum age to two years would result in an increase in the incidence of pertussis in children under the age of two. This is exactly what happened.
During the period 1970-74, when DTP immunisation was begun at three months the incidence of pertussis in children aged under one was approximately four per 100,000. In 1975 the minimum immunisation age was moved to two years, and by 1984 the incidence of pertussis in children aged under one was over 20 per 100,000.44
These figures, which demonstrate well the expected change in pertussis epidemiology following shift in immunisation age, are particularly damaging to Dr Scheibner’s case, so it comes as no surprise to see her not mention them.
If DTP immunisation caused SIDS, as Dr Scheibner claims, we would expect to observe the SIDS rate rise as immunisation rates increase. As noted earlier, in the UK during the mid 1970s pertussis immunisation rates fell.
Following the pertussis epidemics of 1977-79 and 1981-82 there were intensive efforts to improve immunisation rates. These efforts were successful and by 1992 pertussis immunisation rates were higher than they had ever been.45
Over the same period SIDS deaths in the UK were falling, and by 1992 the number of deaths was lower than it had ever been.46 If DTP is an important cause of SIDS then how is this explained? Isn’t this the exact opposite of what would be expected according to Dr Scheibner?
Finally, in reviewing the DTP/SIDS literature Dr Scheibner found a study by Baraff et al47 that described a possible link between SIDS and DTP, but she managed to miss the criticism of this paper (no account taken of the age distribution of SIDS cases) by Mortimer.48 She also failed to find the work of Bouvier-Colle et al49, and Taylor and Emory50, both of which offer no support for her belief.
Table 3 lists the number of cases of measles and reported deaths from measles for the years 1960-69 in the USA. 51
Year | Cases | Deaths |
1960 | 441,703 | 380 |
1961 | 423,919 | 434 |
1962 | 481,530 | 408 |
1963 | 385,156 | 364 |
1964 | 458,083 | 421 |
1965 | 261,904 | 276 |
1966 | 204,136 | 261 |
1967 | 62,705 | 81 |
1968 | 22,231 | 24 |
1969 | 25,826 | 41 |
Table 3.
Measles cases and related deaths in the USA, 1960-69.
What these figures demonstrate is a period of no significant change in cases or deaths (1960-64) followed by a period of marked decline (1965-69). Anyone with even a rudimentary knowledge of epidemiology would look at these figures and hypothesize that something occurred around about 1963-64 that resulted in a marked decline in the number of cases and deaths from measles.
What happened at this time? Measles immunisation was introduced in the USA in 1963-64. Dr Scheibner, not surprisingly, does not report these figures, but she does claim that:
...vaccination against measles is totally ineffective
and
measles occurs irrespective of and despite vaccination. 2(p82) [emphasis added]
If measles immunisation is "totally ineffective" then I would be interested in her explanation for the above figures, and for the experience in Finland, where a nationwide immunisation program resulted in a 99% decrease in the incidence of measles.52
Dr Scheibner’s preferred approach in the case of measles is to ignore evidence such as this and instead she tries to portray measles as a disease that it is not worth immunising against. She quotes in a supportive manner from a paper expressing the view that measles is "a mild disease with rare serious complications..."2(p83)
The facts yet again tell a different story.
Measles is regarded as the most common vaccine- preventable cause of death among children in the world.53 In 1989 it was estimated that across the globe 1.5 million children per year died from measles and its complications. Up to 10% of children who get measles suffer middle ear infection and nearly as many suffer bronchopneumonia, which is the commonest cause of death. Encephalitis (inflammation of the brain) occurs in approximately one in every 1-2,000 cases. Approximately 15% of patients who suffer encephalitis will die, and 25-35% will suffer permanent brain damage.53
A rare degenerative disorder of the neurological system – Subacute Sclerosing Panencephalitis (SSPE) - occurs in roughly one in every 100,000 patients with measles, and is characterized by progressive deterioration in neurological functioning with death occurring over a period of months or years. The use of measles vaccine has resulted in the virtual disappearance of SSPE from the USA.54
So much for a mild disease!
I do not believe that Dr Viera Scheibner’s claims regarding DTP and measles immunisation are supported by the available scientific evidence. On the contrary, the evidence strongly supports the view that the benefit of these significantly outweighs the risks.36
In addition I believe that the gaps in her research in this area call into question her objectivity and cast doubts on her ability to speak as an expert witness. It should be a matter of great concern that material such as Dr Scheibner’s is being promoted by groups who ostensibly argue for the right of parents to make up their own minds. How can parents be expected to do this when they are being denied access to so much information?
Dr Scheibner’s claims regarding immunisation are of the ‘all swans are white’ variety. Her scientific credibility is dependent upon her being able to defend the claim that there is "no evidence whatsoever" that vaccines are effective (all swans are white). Such a claim is easily disproven with just a single example of unequivocal vaccine efficacy (That is, by finding just one non-white swan).
In conclusion, therefore, I offer the following additional swans for colour coding:
Though I have been unable in the space available to address Dr Scheibner’s comments on other immunisations, such as Hepatitis B, Rubella, Hib, and Polio, I am happy to do so at a later time.
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This article appeared in the March 1997 edition of |
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