Assessing scrub typhus and rickettsioses transmission risks in the Chiang Rai province of northern Thailand.

Autor: Linsuwanon P; Department of Entomology, US Medical Directorate-Armed Forces Research Institute of Medical Science, Bangkok, Thailand. Electronic address: PiyadaC.fsn@afrims.org., Auysawasdi N; Department of Entomology, US Medical Directorate-Armed Forces Research Institute of Medical Science, Bangkok, Thailand., Wongwairot S; Department of Entomology, US Medical Directorate-Armed Forces Research Institute of Medical Science, Bangkok, Thailand., Leepitakrat S; Department of Entomology, US Medical Directorate-Armed Forces Research Institute of Medical Science, Bangkok, Thailand., Rodkhamtook W; Research Division, Royal Thai Army Component-Armed Forces Research Institute of Medical Science, Bangkok, Thailand., Wanja E; Department of Entomology, US Medical Directorate-Armed Forces Research Institute of Medical Science, Bangkok, Thailand., Monkanna T; Department of Entomology, US Medical Directorate-Armed Forces Research Institute of Medical Science, Bangkok, Thailand., Wegner M; Department of Veterinary Medicine, US Medical Directorate-Armed Forces Research Institute of Medical Science, Bangkok, Thailand., Davidson S; Department of Entomology, US Medical Directorate-Armed Forces Research Institute of Medical Science, Bangkok, Thailand., Poovorawan Y; Center of Excellence in Clinical Virology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand., Poole-Smith B; Department of Entomology, US Medical Directorate-Armed Forces Research Institute of Medical Science, Bangkok, Thailand., Limsuwon C; Department of Entomology, US Medical Directorate-Armed Forces Research Institute of Medical Science, Bangkok, Thailand., McCardle P; Department of Entomology, US Medical Directorate-Armed Forces Research Institute of Medical Science, Bangkok, Thailand.
Jazyk: angličtina
Zdroj: Travel medicine and infectious disease [Travel Med Infect Dis] 2021 Jul-Aug; Vol. 42, pp. 102086. Date of Electronic Publication: 2021 May 24.
DOI: 10.1016/j.tmaid.2021.102086
Abstrakt: Background: Scrub typhus is an important disease in the Asia-Pacific countries with increasing relevance for public health worldwide. Entomological risk assessment for scrub typhus and rickettsial disease in Phu Chi Fah village-Chiang Rai was performed to determine areas at greatest risk for disease transmission in order to increase awareness of diseases to travelers and healthcare workers.
Methods: From 2016 to 2018, rodents and chiggers were collected from 7 sites covering residential, grassland, and forest areas to determine the prevalence of pathogen of interest. The correlation between land type and vector-host-pathogen interaction system was investigated.
Result: High prevalence of O. tsutsugamushi-infected and Rickettsia-infected chiggers was observed especially in areas with grassland and forest ecotones. Chigger and rodent species composition were negatively associated with the level of human disturbance. Increased density of rodents was responsible for a higher abundance of chigger population and increased prevalence of O. tsutsugmaushi infection in chigger in the following year.
Conclusion: Communities in the study areas have an increased exposure risk to scrub typhus and potentially spotted fever group rickettsiosis. Travellers to this endemic area should pay more attention pathogen risks so as to avoid vector and disease exposure. Seasonal rodenticidal activity may help migitate the risk of pathogen transmission.
(Published by Elsevier Ltd.)
Databáze: MEDLINE
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