Surveillance to Track Progress Toward Polio Eradication — Worldwide, 2019–2020
When the Global Polio Eradication Initiative (GPEI) was established in 1988, an estimated 350,000 poliomyelitis cases were reported worldwide. In 2020, 140 wild poliovirus (WPV) cases were confirmed, representing a 99.99% reduction since 1988. WPV type 1 transmission remains endemic in only two coun...
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Veröffentlicht in: | MMWR. Morbidity and mortality weekly report 2021-05, Vol.70 (18), p.667-673 |
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