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Originally Posted by
miriamÂ

Comparing chocolate to vaccines? Â
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 I thought it was pretty obvious that I was using chocolate and stomachaches as an example of the difference between correlation and causation, not in an attempt to show similarity between chocolate and vaccines. I'm sorry if you didn't understand that.
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But if you want to compare the risk of brain damage and death associated with MMR vaccination versus the risk of brain damage and death associated with measles, I'm happy to discuss that. First, with respect to the vaccine, the CDC says:
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Seizure (jerking or staring) caused by fever (about 1 out of 3,000 doses)
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Serious allergic reaction (less than 1 out of a million doses)
http://www.cdc.gov/vaccines/vac-gen/side-effects.htm#mmr
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The NIH says:
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There is no evidence that [febrile seizures] cause death, brain damage, epilepsy, mental retardation, a decrease in IQ, or learning difficulties.
http://www.nlm.nih.gov/medlineplus/ency/article/000980.htm
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But even if we assume that the correlation is also causation, unprovoked (non-febrile) seizures occur in only about 6% of children who have febrile seizures (and of course their risk is more associated with other factors). Still, that leaves us with no more than 6% of 1/3,000, which is .002% (or 1/50,000) of children who will at some point have an unprovoked seizure associated with vaccination. And the NIH says:
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Death or permanent brain damage from seizures is rare.
http://www.nlm.nih.gov/medlineplus/ency/article/000694.htm
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So even among the 1/50,000 kids who have at least one seizure associated with vaccination, it would be "rare" for death or brain damage to occur. And that's without any proof that any of those kids had seizures caused by vaccination.Â
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But let's push on to the risk of death or brain damage from measles, shall we? These are the risks estimated by the CDC:
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Even in previously healthy children, measles can be a serious illness requiring hospitalization. As many as 1 out of every 20 children with measles gets pneumonia, and about 1 child in every 1,000 who get measles will develop encephalitis. (This is an inflammation of the brain that can lead to convulsions, and can leave the child deaf or mentally retarded.) For every 1,000 children who get measles, 1 or 2 will die from it. Measles also can make a pregnant woman have a miscarriage, give birth prematurely, or have a low-birth-weight baby.
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In developing countries, where malnutrition and vitamin A deficiency are common, measles has been known to kill as many as one out of four people. It is the leading cause of blindness among African children. Measles kills almost 1 million children in the world each year.
http://www.cdc.gov/measles/about/complications.html
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Personally, I don't think the numbers even compare. Even if we assume the absolute worst about vaccines, the risk of measles (if one gets measles) is far, far greater.Â
Edited by no5no5 - 4/1/11 at 4:51pm