title: The serological response to Yersinia pestis infection.
abstract: Passive haemagglutination antibody titres to Fraction I antigen of Yersinia pestis were plotted against day of clinical illness in 82 patients in Viet Nam. A rise was evident by day 5 with a peak at day 14, after which a plateau occurred. In contrast to all other patients, 2 patients with recurrent infections had elevated titres at the time of admission which decreased significantly during convalescence.
mesh_terms: D000368:Aged; D000907:Antibodies, Bacterial / Q000032:analysis*; D002648:Child; D005260:Female; D006386:Hemagglutination Tests; D006801:Humans; D010930:Plague / Q000276:immunology*; D015010:Yersinia pestis / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial