title: Occurrence of rickettsiosis of spotted fever group in Chiba Prefecture of Japan.
abstract: Acute- and convalescent-phase sera were obtained from a patient with suspected tsutsugamushi disease in July 1987, in Amatsukominato located in the southeastern area of Chiba Prefecture, and showed negative serologic reactions with Rickettsia tsutsugamushi, while the convalescent-phase serum reacted positively with R. montana and a Japanese isolate of spotted fever group rickettsia at IgM and IgG titers of 1:320 and 1:640, respectively, in the indirect immunofluorescence test. These findings showed that a rickettsiosis of the spotted fever group occurred also in Chiba Prefecture like in the southeastern areas of Shikoku and Kyushu islands of Japan.
authors.affiliation: Department of Virology, Chiba Prefectural Public Health Laboratory.
authors.forename: I
authors.initials: I
authors.lastname: Kaiho
authors.forename: M
authors.initials: M
authors.lastname: Tokieda
authors.forename: M
authors.initials: M
authors.lastname: Ohtawara
authors.forename: T
authors.initials: T
authors.lastname: Uchiyama
authors.forename: T
authors.initials: T
authors.lastname: Uchida
mesh_terms: D005260:Female; D006801:Humans; D007564:Japan; D008875:Middle Aged; D012282:Rickettsia Infections / Q000453:epidemiology* / Q000382:microbiology