Olivier Knox @OKnox · 02 Sep 2026
Vaccines are undoubtedly one of the greatest public-health interventions in history. Key U.S. vaccine milestones: Diphtheria and pertussis: routine vaccination during the 1930s–40s Polio: 1955 Measles: 1963 Mumps: 1967 Rubella: 1969 Combined MMR vaccine: 1971 https://t.co/yCWdGIidoT
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