HumanRickettsia heilongjiangensisInfection, Japan

Ando, Shuji; Kurosawa, M; Sakamoto, Akiko; Fujita, Hiromi; Sakai, Katsurou; Sekine, Masao; Katsumi, Masanori; Saitou, Wakana; Yano, Yasuhiro; Takada, Nobuhiro; Takano, Ai; Kawabata, Hiroki; Hanaoka, Nozomu; Watanabe, Haruo; Kurane, Ichiro; Kishimoto, Tadamitsu

doi:10.3201/eid1608.100049

Cited by 67 publications

(52 citation statements)

References 12 publications

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“…In both countries, FESF cases were most likely misdiagnosed as STT before molecular tools became available (120,399). Recently, the first case from Japan was also reported (405). In Russia and China, R. heilongjiangensis was isolated from Haemaphysalis concinna and Dermacentor silvarum ticks (402,406).…”

Section: Tick-borne Rickettsiae In Asia Species Identified As Pathogensmentioning

confidence: 99%

Update on Tick-Borne Rickettsioses around the World: a Geographic Approach

et al. 2013

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SUMMARY Tick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the spotted fever group of the genus Rickettsia . These zoonoses are among the oldest known vector-borne diseases. However, in the past 25 years, the scope and importance of the recognized tick-associated rickettsial pathogens have increased dramatically, making this complex of diseases an ideal paradigm for the understanding of emerging and reemerging infections. Several species of tick-borne rickettsiae that were considered nonpathogenic for decades are now associated with human infections, and novel Rickettsia species of undetermined pathogenicity continue to be detected in or isolated from ticks around the world. This remarkable expansion of information has been driven largely by the use of molecular techniques that have facilitated the identification of novel and previously recognized rickettsiae in ticks. New approaches, such as swabbing of eschars to obtain material to be tested by PCR, have emerged in recent years and have played a role in describing emerging tick-borne rickettsioses. Here, we present the current knowledge on tick-borne rickettsiae and rickettsioses using a geographic approach toward the epidemiology of these diseases.

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Section: Tick-borne Rickettsiae In Asia Species Identified As Pathogensmentioning

confidence: 99%

Update on Tick-Borne Rickettsioses around the World: a Geographic Approach

et al. 2013

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“…In Japan, since the first patient infected with R. japonica was reported in Tokushima Prefecture in 1984 [10], rickettsiosis has been noticed as a significant emerging infectious disease. Thereafter, cases caused by R. helvetica, R. tamurae, and R. heilongjiangensis have been also reported in Japan [1,7,17]. In wildlife, infection with R. japonica or R. heilongjiangensis, R. felis and R. helvetica was reported in feral raccoons in Hokkaido, Japan [13].…”

mentioning

confidence: 99%

Molecular Detection of Spotted Fever Group Rickettsia in Feral Raccoons (Procyon lotor) in the Western Part of Japan

Baba

Kaneda

Nishimura

et al. 2013

The Journal of Veterinary Medical Science

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ABSTRACT. Rickettsial infection in feral raccoons (Procyon lotor) in the western part of Japan (Shimane, Fukuoka, Saga and Nagasaki Prefectures) was surveyed by a nested polymerase chain reaction (PCR) assay detecting the rickettsial citrate synthase (gltA) gene. Four of one hundred and ninety-four feral raccoon spleens (2.1%) were positive for Rickettsia spp. One gltA gene sequence was identical to R. helvetica, whereas the other 3 sequences were identical and had the highest similarity (98.4%) to R. amblyommii. Simultaneously, we determined a partial sequence of the rickettsial 17-kilodalton (17K) genus-common antigen gene in the later 3 raccoon samples. Their sequences were identical and had the highest similarity (98.5%) to Rickettsia sp. Hj126. Based on the sequences of gltA and 17K antigen genes, these raccoons might be infected with spotted fever group (SFG) rickettsia most closely related to R. amblyommii and/or Rickettsia sp. Hj126. Feral raccoons may be a susceptible reservoir for SFG rickettsiae in Japan.

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“…In our study, this tick species was collected from vegetation, cows and dogs. Haemaphysalis hystricis is a putative vector of pathogens in the genera Rickettsia, Coxiella, Ehrlichia and Trypanosoma (Parola et al, 2003, Thekisoe et al, 2007, Ando et al, 2010, Arthan et al, 2015.…”

Section: Discussionmentioning

confidence: 99%

First survey of the hard tick (Acari: Ixodidae) fauna of Nakai District, Khammouane Province, Laos, and an updated checklist of the ticks of Laos

Vongphayloth¹,

Brey²,

Robbins

et al. 2016

Systematic and Applied Acarology

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From 2012 to 2014, tick collections for tick and tick-borne pathogen surveillance were carried out in two areas of Nakai District, Khammouane Province, Laos: the Watershed Management and Protection Authority (WMPA) area and Phou Hin Poun National Protected Area (PHP NPA). Throughout Laos, ticks and tickassociated pathogens are poorly known. Fifteen thousand and seventy-three ticks representing larval (60.72%), nymphal (37.86%) and adult (1.42%) life stages were collected. Five genera comprising at least 11 species, including three suspected species that could not be readily determined, were identified from 215 adult specimens: Amblyomma testudinarium Koch (10; 4.65%), Dermacentor auratus Supino (17; 7.91%), D. steini (Schulze) (7; 3.26%), Haemaphysalis colasbelcouri (Santos Dias) (1; 0.47%), H. hystricis Supino (59; 27.44%), H. sp. near aborensis Warburton (91; 42.33%), H. sp. near darjeeling Hoogstraal and Dhanda (5; 2.33%), H. sp. near lagrangei Larrousse (3; 1.4%), H. spp. (16; 7.45%), Rhipicephalus haemaphysaloides (Supino) (5; 2.33%), and R. (Boophilus) microplus (Canestrini) (1; 0.47%). These collections, together with the literature to date, provide evidence for the occurrence of at least 22 ixodid tick species, representing six genera, in Laos. Here we present new records for at least four tick species from WMPA area, Nakai District, Khammouane Province, where tick-borne pathogens may circulate. These preliminary results should serve as a framework for further molecular investigations of putative tick vectors and their pathogens in Laos.

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HumanRickettsia heilongjiangensisInfection, Japan

Cited by 67 publications

References 12 publications

Update on Tick-Borne Rickettsioses around the World: a Geographic Approach

Update on Tick-Borne Rickettsioses around the World: a Geographic Approach

Molecular Detection of Spotted Fever Group Rickettsia in Feral Raccoons (<i>Procyon lotor</i>) in the Western Part of Japan

<strong>First survey of the hard tick (Acari: Ixodidae) fauna of Nakai District, Khammouane Province, Laos, and an updated checklist of the ticks of Laos</strong>

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