Some epidemiological considerations of scrub typhus (Rickettsia tsutsugamushi) in a natural focus in the Zambales Mountains, Luzon, Republic of the Philippines

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  • 1 Epidemiological and Entomological Divisions, 1st Medical Service Wing (PACAF), APO San Francisco 96274
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Reports of six cases of scrub typhus in USAF personnel at the 3614th Combat Crew Training Squadron, Clark Air Base, Philippines during the rainy seasons of 1969 and 1970 prompted an investigation into the scrub typhus potential of the field training area. Rickettsia tsutsugamushi was isolated from Rattus rattus mindanensis; two vector species, Leptotrombidium (Leptotrombidium) akamushi and L. (L.) deliense, were collected. The focus fulfilled all of the basic requirements for the natural maintenance of this disease.

Author Notes

Formerly Captain, USAF, BSC, Entomology Division, 1st Medical Service Wing (PACAF). Present address: Zoology Department, University of Oklahoma, Norman, Oklahoma 73069.

Captain, USAF, BSC, Epidemiological Division, 1st Medical Service Wing (PACAF). Present address: USAF School of Health Care Sciences, Sheppard AFB, Texas 76311.

Major, USAF, MC, Epidemiological Division, 1st Medical Service Wing (PACAF), APO San Francisco 96274. Present address: New York Psychiatric Institute, 722 W. 168th Street, New York, N. Y. 10032.

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