Published in Medical Letter on the CDC and FDA, April 11th, 2000
The vaccine, called Oka, was licensed in 1995 and millions of children receive it every year. It is made from a weakened live virus. Like all vaccines, Oka provokes an immune response from the patient, preparing the body's defenses to fight in case of infection with the wild form of the virus. When the wild virus later attacks, the body is prepared to respond quickly by boosting the anti-virus material in the bloodstream.
Researchers at the U.S. Food and Drug...
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