Why in news
Polio cases and environmental samples of poliovirus are resurging globally, with both wild poliovirus (WPV) and vaccine-derived poliovirus (cVDPV) detected in multiple countries.
Poliovirus has been found in wastewater systems in countries in Europe, while cases have been reported in Pakistan, Cameroon, and other regions.
The detection highlights the ongoing need for vaccination and surveillance to prevent further outbreaks and protect vulnerable populations.
Key Factors Contributing to Polio Resurgence
Environmental Detection: Poliovirus has been found in wastewater in several European countries, though no direct cases have been confirmed yet.
Under-Vaccination: Pockets of under-vaccinated populations exist globally, leading to immunity gaps that allow polio to spread.
Vaccine-Derived Poliovirus: The use of oral polio vaccine (OPV) has led to the creation of cVDPVs, which can cause outbreaks in under-vaccinated areas.
Polio in Gaza: A confirmed case of polio in a child in Gaza underscores the risk, despite vaccination efforts.
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