Duration of postvaccination antityphoid immunity according to the results of strictly controlled field trials.
D000096:Acetone; D006358:Hot Temperature; D006801:Humans; D013997:Time Factors; D014435:Typhoid Fever / Q000276:immunology*; D014436:Typhoid-Paratyphoid Vaccines / Q000592:standards
D014436:Typhoid-Paratyphoid Vaccines; D000096:Acetone