23 Mar (VACTRUTH) – Around the world, medical authorities tell parents that vaccination has been proven not to cause SIDS, and sometimes they are even told that vaccination prevents SIDS. However, the studies that are used to justify these claims use research methods that do not adequately investigate the possibility that vaccination may actually increase the risk of SIDS in susceptible babies.
by WENDY LYDALL
The CASE-CONTROL METHOD
A favorite method used by researchers who are looking at the relationship between vaccination and SIDS is the case-control method. Case-control studies compare babies who died with babies who did not die. The researchers select a group of babies who died of SIDS within a particular geographical area, and these babies are called the cases. Each case is matched with two or three live babies who are called the controls. The vaccination history of the baby who has died is then compared with the vaccination histories of the two or three babies who have not died. Babies who have not received any vaccinations are excluded from the study.
In the case-control studies that have been published, researchers have found that when the live babies were at the age at which the case baby died, they had received more vaccine doses than those who had died. This leads the authors to conclude that vaccination does not cause SIDS, which is a happy conclusion for those who want to promote vaccination, but far from scientifically sound.
One problem with the case-control method is that it could be comparing fragile babies who are susceptible to dying from an immunological onslaught with tougher babies who can survive being injected with animal tissue, human tissue, peanut oil, attenuated germs, toxic metals, toxic chemicals, and genetically engineered yeast. Case-control studies can be useful for investigating something that is static at the time of death; for example, whether the baby was sucking a pacifier, or lying face down.
However, the effects of vaccination are not static; they are ongoing, and they are unknown. Case-control studies can also be useful if you take all the confounding factors into account, but in the case of vaccine susceptibility, no one yet knows what the confounding factors are. Controlling for factors that are known to increase the risk of SIDS does not mean that you are controlling for factors that increase the risk of SIDS from vaccination.
AN IMPORTANT DISCOVERY
In the most recent case-control study, which was done in Germany, researchers found that the babies who died had had fewer vaccinations than the ones who were still alive, and that their vaccinations had been done later. 
The latter finding may be significant. Parents can be reluctant to turn up on time for vaccinations when they feel that their baby is unusually fragile, or when they know that vaccine reactions run in the family. Some parents who are not keen on vaccination eventually comply because of the extreme pressure that is put on them, but they do it later than at the prescribed time.
Interestingly, the researchers did find a statistically significantly higher rate of developmental problems, hospital admissions and special investigations, like x-rays or electrocardiograms, in the SIDS babies compared to the live babies.  This discovery might mean that the babies with these problems, who were only 22 percent of the SIDS babies, were more susceptible to dying unexpectedly, and that vaccination played no role in their deaths.
Alternatively, it might mean that these babies were susceptible to an unknown effect of vaccination, and that vaccination killed them. A different study design would need to be used to ascertain whether vaccination played a part in the deaths of this 22 percent. The fact that these babies had had fewer doses of vaccine than the live babies with whom they were compared does not mean that they were not pushed over the edge by the vaccines that entered their bodies.
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to drop at any time after vaccination.