History20th centuryUnited Stateshigh confidence

A U.S. childhood vaccination initiative launched in 1977 aimed to raise the national vaccination rate to 90% within two years.

Notes on verification

Confirmed by CDC MMWR historical reports and CDC museum archives, which explicitly state the 1977 Childhood Immunization Initiative aimed for 90% immunization by October 1979. [tier=silver indep_score=0.925 clusters=2 claim_tier=everyday]

Sources