ArticleScientific reports2019
Diversity of spotted fever group rickettsiae and their association with host ticks in Japan.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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35 citing papers in PubMed, 62 citations in OpenAlex.
- Molecular diversity of tick-associated Rickettsia species in multiple provinces of Zambia.The Journal of veterinary medical science · 2026Article
- Genomic signatures of native (Japanese) and introduced (Oceanian) populations of the Asian longhorned tickPNAS nexus · 2026Article
- Molecular surveillance ofInternational journal for parasitology. Parasites and wildlife · 2026Article
- Mapping Potential Risks for the Transmission of Spotted Fever Rickettsiosis after Environmental Changes in an Atlantic Forest Region in Brazil.ACS omega · 2026Article
- Development and Evaluation of a Dual-Target One-Step Nested PCR for the Detection of Spotted Fever GroupPathogens (Basel, Switzerland) · 2026Article
- Mammal community composition and season determine the abundance of questing ticks in mountainous forests of central Japan.International journal for parasitology. Parasites and wildlife · 2025Article
- The mosaic of Rickettisae from the Caatinga Biome, Brazil: New records and first interactions.PLoS neglected tropical diseases · 2025Article
- Analysis of tick-borne pathogens using next-generation sequencing in ticks from wild animals in the Republic of Korea.Journal of veterinary science · 2025Article
- Molecular detection and characterization of spotted fever groupParasitology · 2025Article
- Ticks and tick-borne diseases in the northern hemisphere affecting humans.Frontiers in microbiology · 2025Review
- Nationwide Survey of Vector-Borne Diseases in Rodents and Mites in Korea:Animals : an open access journal from MDPI · 2024Article
- Infection Rates and Characterisation ofMicroorganisms · 2024Article
- Distribution and pathogen prevalence of field-collected ticks from south-western Korea: a study from 2019 to 2022.Scientific reports · 2024Article
- Unraveling the phylogenetics of genetically closely related species, Haemaphysalis japonica and Haemaphysalis megaspinosa, using entire tick mitogenomes and microbiomes.Scientific reports · 2024Article
- Article
- Molecular Detection ofVeterinary sciences · 2023Article
- Tick Species Diversity and Molecular Identification of Spotted Fever Group Rickettsiae Collected from Migratory Birds Arriving from Africa.Microorganisms · 2023Article
- Summer collection of multiple southern species of ticks in a remote northern island in Japan and literature review of the distribution and avian hosts of ticks.Experimental & applied acarology · 2023Review
- Increasing Risk of Tick-Borne Disease through Growth Stages in Ticks.Clinics and practice · 2023Article
- Phylogenetic Position ofGenes · 2023Article
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Authors and funding
17 authors at 7 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Spotted fever group (SFG) rickettsiae are obligate intracellular Gram-negative bacteria mainly associated with ticks. In Japan, several hundred cases of Japanese spotted fever, caused by Rickettsia japonica, are reported annually. Other Rickettsia species are also known to exist in ixodid ticks; however, their phylogenetic position and pathogenic potential are poorly understood. We conducted a nationwide cross-sectional survey on questing ticks to understand the overall diversity of SFG rickettsiae in Japan. Out of 2,189 individuals (19 tick species in 4 genera), 373 (17.0%) samples were positive for Rickettsia spp. as ascertained by real-time PCR amplification of the citrate synthase gene (gltA). Conventional PCR and sequencing analyses of gltA indicated the presence of 15 different genotypes of SFG rickettsiae. Based on the analysis of five additional genes, we characterised five Rickettsia species; R. asiatica, R. helvetica, R. monacensis (formerly reported as Rickettsia sp. In56 in Japan), R. tamurae, and Candidatus R. tarasevichiae and several unclassified SFG rickettsiae. We also found a strong association between rickettsial genotypes and their host tick species, while there was little association between rickettsial genotypes and their geographical origins. These observations suggested that most of the SFG rickettsiae have a limited host range and are maintained in certain tick species in the natural environment.
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