P. W. C.
That human beings can acquire a considerable degree of resistance to malarial infection has been known for many years. It is a matter of common observation that native inhabitants of tropical regions in which malaria is continuously prevalent—the "hyperendemic" areas—acquire a resistance or at least a tolerance for the infection, so that they show no clinical symptoms of malaria although susceptible newcomers quickly become ill and often succumb to the disease. The conditions under which such immunity develops have been studied with particular care by British observers such as Thomson, Christophers, and James.1 These studies have shown that practically everyone
C. PW. IMMUNITY TO MALARIA. Ann Intern Med. ;15:146–148. doi: 10.7326/0003-4819-15-1-146
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Published: Ann Intern Med. 1941;15(1):146-148.
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