Abstract
Rickettsiae in Ticks, Japan, 2007–2011
Highlights
To the Editor: Japanese spotted fever (JSF), caused by Rickettsia japonica, is the most prevalent tickborne infectious disease in Japan (1), occurring most frequently in central and western regions
We identified the tick species associated with R. japonica as H. formosensis, H. hystricis, and H. cornigera, and another study reported an association with Dermacentor taiwanensis, H. flava, H. longicornis, and I. ovatus (4)
In our study and previous studies, the tick species associated with A. phagocytophilum in Japan were identified as H. formosensis, H. longicornis, H. megaspinosa, A. testudinarium, I. ovatus, and I. persulcatus (8)
Summary
To the Editor: Japanese spotted fever (JSF), caused by Rickettsia japonica, is the most prevalent tickborne infectious disease in Japan (1), occurring most frequently in central and western regions Several spotted fever group (SFG) rickettsiae (R. japonica, R. heilongjiangensis, R. helvetica, R. tamurae, R. asiatica, Candidatus R. tarasevichiae) and other related Rickettsia spp. have been identified in Japan (1,3–6). Human infections with R. heilongjiangensis and R. tamurae have been confirmed (3,5), and Anaplasma phagocytophilum and Ehrlichia chaffeensis, known human pathogens, have been detected in ticks and deer in Japan.
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