PMID: 30165719Aug 31, 2018Paper

Surveillance for Scrub Typhus, Rickettsial Diseases, and Leptospirosis in US and Multinational Military Training Exercise Cobra Gold Sites in Thailand

U.S. Army Medical Department Journal
Piyada LinsuwanonElizabeth Wanja

Abstract

We report findings of field surveillance for disease vectors and the prevalence of Orientia tsutsugamushi, the causative agent for scrub typhus, and other Rickettsial species that cause murine typhus and spotted fever group rickettsioses, in chigger mites and small rodents; and Leptospira in rodent kidney, urine, and environmental water samples. The study sites included various Royal Thai Army military installations and other training sites, and surrounding areas where the multinational military training exercise Cobra Gold was conducted in Thailand in 2017 and 2018. The overall prevalence of O. tsutsugamushi and Rickettsia infection in chiggers was 1.3% (20/1,594) and 7.5% (119/1,594), respectively. Serum samples of the captured rodents indicated previous exposure to O. tsutsugamushi infection with a seropositive rate of 12.2%. Leptospira species were isolated from rodent kidneys and water samples collected from catchment areas as well as tap water used for hand washing. Findings from this surveillance are important in determining the potential for scrub typhus, rickettsioses, and leptospirosis risk to military and US government personnel, as well as for informing regional and combatant commanders for prevention, correct diagn...Continue Reading

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