Just FYI:
http://en.wikipedia.org/wiki/Paul_Offit
and about the withdrawn vaccine, from
http://en.wikipedia.org/wiki/Rotavirus_vaccine:
Quote:
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Clinical trials in the United States, Finland, and Venezuela had found it to be 80 to 100% effective at preventing severe diarrhea caused by rotavirus A, and researchers had detected no statistically significant serious adverse effects. The manufacturer of the vaccine, however, withdrew it from the market in 1999, after it was discovered that the vaccine may have contributed to an increased risk for intussusception, or bowel obstruction, in one of every 12,000 vaccinated infants.
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I don't normally cite Wikipedia but, in this case, it seemed the source least likely to reflect bias.