arzachel: "South Sudan confirms outbreak of vaccine-derived …" - Mastodon

arzachel @arzachel@mastodon.derveni.org

South Sudan confirms outbreak of vaccine-derived polio https://www.sott.net/article/443329-South-Sudan-confirms-outbreak-of-vaccine-derived-polio

Oct 24, 2020, 22:28 · · Toot! · · ·

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