U.S. polio case tied to viruses detected in U.K., Israel, suggesting silent spread - STAT

Genetic analysis of the virus responsible for the first case of polio in the United States in nearly a decade shows it is linked to vaccine-derived viruses recently detected in Jerusalem and London.

Genetic analysis of the virus responsible for the first case of polio in the United States in nearly a decade shows it is linked to vaccine-derived viruses recently detected in Jerusalem and London, … [+4429 chars]

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