Fig. 7. Rubella incidence in selected areas of the United States, 1928-1982. The maximal number of cases of congenital rubella syndrome occurred in 1964. Rubella vaccine was licensed in 1969. (Williams NM, Preblud SR: Rubella and congenital rubella surveillance, 1983. CDC Surveillance Summaries. MMWR 33:1SS, 1984)