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01-14-2025, 06:40 PM
In its original form, the virus survives in just two countries. But a type linked to an oral vaccine used in other nations has already turned up in the West.
More... (https://www.nytimes.com/2025/01/13/health/polio-vaccine-outbreaks.html)
More... (https://www.nytimes.com/2025/01/13/health/polio-vaccine-outbreaks.html)