Shirai A, Tanskul P L, Andre R G, Dohany A L, Huxsoll D L
Southeast Asian J Trop Med Public Health. 1981 Mar;12(1):1-6.
R. tsutsugamushi strains found in chiggers collected from 3 different sites throughout Thailand were antigenically characterized. Monotypic infections were observed in 76.7% of the chiggers. Karp was the most predominant strain, followed by TA716, TA763, TA686 and Kato. This study represents the first confirmed report of R. tsutsugamushi infection in 8 different chigger species in Thailand.