How many cases of measles were reported in the US in 1962 the year later before measles vaccine was licensed?

In 1962, there were approximately 495,000 reported cases of measles in the United States, a year before the measles vaccine was licensed. This high number of cases highlighted the need for an effective vaccination program to control the disease. The introduction of the measles vaccine in 1963 significantly reduced the incidence of measles in subsequent years.