Q fever is a zoonotic infection caused by Coxiella burnetii. Although mammals, birds, and arthropods are all reservoirs of C. burnetii, ticks are known to be one of the main carriers.1 The most common source of human infections is farm animals, including cattle, goats, and sheep.2
Scrub typhus is a mite-borne infectious disease caused by Orientia tsutsugamushi. The disease occurs predominantly in Asian Pacific Rim countries, including South Korea, China, Taiwan, Japan, India, Thailand, and Australia.3
To date, almost no study has reported coinfection of Q fever and scrub typhus.4 Here, the patient’s scrub typhus persisted even after she received doxycycline for 5 days. Her continuing symptoms prompted us to perform further examinations, in which we identified coinfection of Q fever and scrub typhus molecularly and serologically. In addition, we isolated O. tsutsugamushi. This report describes the details of the case.
We thank research workers, such as Seung Hun Lee and Seon do Hwang, from the Korea Centers for Disease Control and Prevention (2014-NI52001-00).
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