|Description:||Photographed prior to 1967, this historic image depicted a public health scientist as he was collecting field data during a plague epidemiologic investigation in an unknown location. In this particular view the epidemiologist had captured a wild rodent, which would later be analyzed in order to determine if it was hosting any plague-infected fleas.|
At the time, this man was a staff member at the former San Francisco, California, Public Health Service, Communicable Disease Center, Plague Laboratory.
The Communicable Disease Center (CDC) was a branch of the U.S. Public Health Service (PHS), which was a branch of the former Department of Health, Education, and Welfare (HEW). Retaining its acronym, in 1970 the CDC was renamed to the Center for Disease Control, and in 1979, HEW was renamed the Department of Health and Human Services.