Annual morbidity in the 20th century, before and after vaccines: Measles: Before: 530,000, After: 47 Mumps: Before: 160,000, After: 429 Rubella: Before: 50,000, After: 3 Diphtheria: Before: 20,000, After: 2 Smallpox: Before: 30,000, After: 0 Polio: Before: 16,000, After: 0

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