| c 1918-1944. Age incidence of pneumonia and the percentage of influenza and related diseases that were complicated by pneumonia in Baltimore and Hagerstown, Maryland. | | The 1918 influenza pandemic occurred too rapidly for the PHS to develop a detailed study of the pandemic. After the pandemic, they developed a map with approximate dates of the outbreak. [Credit: Office of the Public Health Service Historian] | | When an epidemic emerged, the Public Health Service’s epidemiologists tracked the disease, house by house. The 1918 influenza pandemic occurred too rapidly for the PHS to develop a detailed study of the pandemic. This map was used to trace a smaller typhoid epidemic which erupted in Washington DC in 1906. [Credit: Office of the Public Health Service Historian] |
