Rickettsial and serologic evidence for prevalent spotted fever rickettsiosis in inner Mongolia

F. Ming-Yuan, D. H. Walker, L. Qing-Huai

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A field study in northeastern Inner Mongolia, People's Republic of China, in June of 1985 demonstrated a spotted fever group of rickettsiosis. Two strains of spotted fever group rickettsiae were isolated. One strain was obtained from the blood of a patient with an eschar, regional lymphadenopathy, and history of a recent tick bite. The other strain originated from ova of ticks, Dermacentor nuttalli. These represent the second isolate of a spotted fever group rickettsia from a human and the first isolate from tick ova in the People's Republic of China. Antibodies to these rickettsiae were demonstrated by indirect immunofluorescence in the sera of 4% of healthy children and 34% of healthy human adults, in 58% of sheep, and in 76% of cattle in the same location. Hemolymph test revealed rickettsiae in 6 of 36 D. nuttalli examined.

Original languageEnglish (US)
Pages (from-to)615-620
Number of pages6
JournalAmerican Journal of Tropical Medicine and Hygiene
Issue number3
StatePublished - Jan 1 1987
Externally publishedYes


ASJC Scopus subject areas

  • Parasitology
  • Virology
  • Infectious Diseases

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