RT @devisridhar: Herd immunity didn’t develop to cholera, yellow fever, smallpox, measles, TB, malaria, or plague -> public health measures… 0 atbildes
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Jurģis Liepnieks (2020-09-21 19:40:23) |
RT @devisridhar: Herd immunity didn’t develop to cholera, yellow fever, smallpox, measles, TB, malaria, or plague -> public health measures… | |