Skip to main content

Letter from Arie C. Van Ravenswaay, United States Army Air Forces to Michael Heidelberger

 Digital Record
Identifier: 101584940X51


  • 1 June 1944


1 Pages


During World War II Heidelberger developed a vaccine against pneumococcal pneumonia that was tested among 20,000 trainees at an air base in Sioux Falls, South Dakota. The test, in which half the trainees received the vaccine while the other half did not, proved that a vaccine made from a mixture of purified capsular polysaccharides from four different types of pneumococcus was effective against the disease.

Language of Materials


Original Profiles System Identifier


Physical Description

Physical Condition - Good

Collecting Area Details

Part of the Archives and Modern Manuscripts Collection Collecting Area

8600 Rockville Pike
Bldg 38/1E-21, MSC 3819
Bethesda MD 20894 US
1-888-FINDNLM (1-888-346-3656)