Vaccines that changed your life: 1796 smallpox. 1885 rabies. 1890 tetanus. 1896 typhoid fever. 1906 TB. 1923 diphtheria. 1926 whooping cough. 1932 yellow fever. 1937 flu. 1952 polio. 1963 measles. 1967 mumps. 1969 rubella. 1974 chickenpox.
— mohamad safa (@mhdksafa) Sep 19, 2021
via Twitter https://twitter.com/mhdksafa
September 19, 2021 at 10:31PM
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