Battling Infectious Diseases in the 20th Century: The Impact of Vaccines

The number of infected people, measured over 70-some years and across all 50 states and the District of Columbia, generally declined after vaccines were introduced.

The heat maps below show number of cases per 100,000 people.

Tool used: Tableau

The data link is here: Link1  Link 2

Note: The CDC did not report any weekly, state level data for pertussis between 1955 and 1974. The vaccine was introduced in 1914.

Note: The vaccine for smallpox was introduced in 1800.