Published in Vaccine Weekly, November 1st, 2006
"Whole-cell pertussis (wP) and measles vaccines are effective in preventing disease but have also been suspected of increasing the risk of encephalopathy or encephalitis. Although many countries now use acellular pertussis vaccines, wP vaccine is still widely used in the developing world. It is therefore important to evaluate whether wP vaccine increases the risk of neurologic disorders. A retrospective case-control study was performed at four health maintenance organizations," scientists in the United States report.
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