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25 авг 2020 г. - Polio

Описание:

Africa is declared free of wild polio, the second virus to be eradicated from the continent since smallpox 40 years previously

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2020 and future

ByColin O'Donnell

28 дек 2020

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Дата:

25 авг 2020 г.

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~ 5 гг и 2 мес назад

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