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The discovery of a wild-type poliovirus 1 case in Malawi highlights the ongoing need for vigilance in global polio eradication efforts.
With the world on the cusp of poliovirus eradication, the finding of a case of wild-type poliovirus 1 (WPV1) in a 4-year old child from Lilongwe, Malawi in November 2021 and reported in February (WHO-AFRO 2022) has come as a blow and in some respects, as an opportunity. In a statement released on February 17, 2022, the Malawian Ministry of Health confirmed the case and declared a public health emergency (WHO-AFRO 2022). Immediate investigations have been initiated, and no evidence of community transmission is presently discernible.
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McCarthy et al. (2022) studied this question.
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