Africa battles out-of-control polio outbreaks | Science

On 17 February, Malawi’s Ministry of Health announced a nasty surprise: A 3-year-old girl who was paralyzed in November 2021 was infected with the wild poliovirus, which Africa officially vanquished in 2020. The sequence of the virus showed it had somehow made the leap from Pakistan, one of the last two holdouts of the wild … Read more