Genetic characterization of spotted fever group rickettsiae in questing ixodid ticks collected in Israel and environmental risk factors for their infection
| Autor: | Yaarit Nachum-Biala, Adi Ben-Nun, Moh A. Alkhamis, Jessica Rose, Shimon Harrus, Kosta Y. Mumcuoglu, Eyal Klement, Ziad Abdeen, Itamar M. Lensky, Abedelmajeed Nasereddin |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Veterinary medicine Rhipicephalus sanguineus 030231 tropical medicine Tick Polymerase Chain Reaction 03 medical and health sciences 0302 clinical medicine Sensu Risk Factors Rhipicephalus Animals Israel Rickettsia Ecosystem Phylogeny Rickettsia massiliae biology Sequence Analysis DNA biology.organism_classification Spotted fever 030104 developmental biology Infectious Diseases Candidatus Rickettsia barbariae Geographic Information Systems Animal Science and Zoology Parasitology Rickettsia conorii Animal Distribution Bacterial Outer Membrane Proteins |
| Zdroj: | Parasitology. 144(8) |
| ISSN: | 1469-8161 |
| Popis: | SUMMARYThis study aimed to genetically characterize spotted fever group rickettsiae (SFGR) in questing ixodid ticks from Israel and to identify risk factors associated with SFGR-positive ticks using molecular techniques and geographic information systems (GIS) analysis. 1039 ticks from the genusRhipicephaluswere collected during 2014. 109/1039 (10·49%) carried SFGR-DNA of eitherRickettsia massiliae(95), ‘CandidatusRickettsia barbariae’ (8) orRickettsia conorii(6). Higher prevalence of SFGR was found inRhipicephalus turanicus(18·00%) compared withRhipicephalus sanguineussensu lato (3·22%).Rickettsia massiliaewas the most commonly detected species and the most widely disseminated throughout Israel (87·15% of allRickettsia-positive ticks). GIS analysis revealed that Central and Northern coastal regions are at high risk for SFGR. The presence of ticks was significantly associated with normalized difference vegetation index and temperature variation over the course of the year. The presence of rickettsiae was significantly associated with brown type soils, higher land surface temperature and higher precipitation. The latter parameters may contribute to infection of the tick with SFGR. Health care professionals should be aware of the possible exposure of local communities and travellers toR. massillae. Molecular and geographical information can help professionals to identify areas that are susceptible to SFGR-infected ticks. |
| Databáze: | OpenAIRE |
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