What Is a Vaccine-Derived Poliovirus
New York health officials announced in July that an unvaccinated adult man from Rockland County had been diagnosed with polio—the first case of the l
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New York health officials announced in July that an unvaccinated adult man from Rockland County had been diagnosed with polio—the first case of the l
New York health officials announced in July that an unvaccinated adult man from Rockland County had been diagnosed with polio—the first case of the life-threatening disease in the United States since 2013. The virus that causes polio was later detected in New York City wastewater, and city and state health officials now say the virus…
Vaccine-derived viruses, which emerge when the weakened viruses in the oral polio vaccine mutate and spread in unvaccinated populations, still occasionally cause outbreaks