Serological Evidence for a High Incidence of Transmission of Rickettsia Tsutsugamushi in Two Orang Asli Settlements in Peninsular Malaysia

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  • U.S. Army Medical Research Unit, Institute for Medical Research, Kuala Lumpur, Malaysia

Two communities of Orang Asli (aborigines) in Peninsular Malaysia were observed for evidence of Rickettsia tsutsugamushi infection over periods of 1–8 mo. Sequential sera were examined for antibody by the indirect immunofluorescence test. The incidence of infection in the two self-selected populations in the two communities was calculated to be 3.9% per month and 3.2% per month.

Author Notes

Major, R.A.M.C. Present address: Royal Army Medical College, Millbank, London, SW1, England.