The malaria appraisal program was initiated in 1947 by the Communicable Disease Center with the collaboration of certain States. As originally conceived the purpose of this program was to measure the actual incidence of malaria and to eliminate spurious reporting. In 1950 the appraisal program became an integral part of the malaria surveillance and prevention program of the Communicable Disease Center and State health departments concerned. Public Health Service medical and nurse officers were assigned to certain States to appraise individual cases and deaths attributed to malaria, and to promote better diagnosis and treatment of the disease.
Detailed reports of the results of appraisals through 1950 have been presented elsewhere (Quinby 1950; Andrews, et al. 1950; Andrews 1951; Quinby and Welch 1952). This paper is concerned, primarily, with malaria attacks occurring during 1951.
During 1951 the nation reported 6,427 cases as compared to 2,227 for the previous year.