I heard that this vaccine is only effective for five years-- is this true? Also, my son was vaccinated when he was a year old and at 4 he just contracted the chicken pox. I have heard from other mothers who also had their children vaccinated and they both contracted the illness as well. They say that the vaccine is approximately 85% effective, but that seems like a misnomer to me. I am guessing that in years to come we will discover that it is much less effective than originally thought, and it would be helpful to know that there is a forum to register these "anomolies" to keep track of this. (As a side note, I read that the vaccine lessens the severity of the illness, and that no more than 5 pox should appear. Today, my son has at least 30 lesions. The other mother's I've spoken with have reported the same circumstances, and have commented that it appears as though their vaccinated children contracted a worse case than their non-vaccinated children. I find this odd. When I had the chicken pox as a kid, I got about 5 spots. That was in 1984, when there was no vaccine...)









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