Occurrence of rickettsiosis of spotted fever group in Chiba Prefecture of Japan.
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.
Kaiho
I
I
Department of Virology, Chiba Prefectural Public Health Laboratory.
Tokieda
M
M
Ohtawara
M
M
Uchiyama
T
T
Uchida
T
T
D005260:Female; D006801:Humans; D007564:Japan; D008875:Middle Aged; D012282:Rickettsia Infections / Q000453:epidemiology* / Q000382:microbiology