Recently, researchers have detected the poliovirus in the sewage system in east London
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Its original source is likely to be someone recently inoculated with an oral version of the polio vaccine.
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On July 21, the New York State Department of Health announced a case of polio in an unvaccinated man in Rockland County.
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But according to WHO report cases due to wild poliovirus have decreased by over 99% since 1988, from an estimated 350 000 cases then, to 6 reported cases in 2021.
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“This is a wake-up call,” said Dr. Peter Salk, president of the Jonas Salk Legacy Foundation and the son of Jonas Salk, the developer of the polio vaccine
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Cases of paralysis in the US and Israel suggest vaccine-derived poliovirus has infected many people.
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What are Polio symptoms ?
> a high temperature > sore throat > headache > stomach pain > aching muscles > feeling sick
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Why are these outbreaks happening?
Most unvaccinated people who contract the virus don’t get sick at all or have mild illness, and about 25 percent will get mild flu-like symptoms.
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There's two main forms of polio virus: The wild-type virus, which is seen in endemic countries, another is vaccine-derived polio type detected in wastewater.