2025-04-08 森林総合研究所,札幌東徳洲会病院
<関連情報>
- https://www.ffpri.affrc.go.jp/press/2025/20250408/index.html
- https://www.ffpri.affrc.go.jp/press/2025/20250408/documents/20250408press.pdf
- https://link.springer.com/article/10.1007/s10393-025-01702-4
森林の分断と温暖化がダニ媒介性疾患の感染を増加させる Forest Fragmentation and Warmer Climate Increase Tick-Borne Disease Infection
Hayato Iijima,Yuya Watari,Kandai Doi,Kazuhiro Yasuo & Kimiko Okabe
EcoHealth Published:26 January 2025
DOI:https://doi.org/10.1007/s10393-025-01702-4
Abstract
Anthropogenic disturbances degrade ecosystems, elevating the risk of emerging infectious diseases from wildlife. However, the key environmental factors for preventing tick-borne disease infection in relation to host species, landscape components, and climate conditions remain unknown. This study focuses on identifying crucial environmental factors contributing to the outbreak of severe fever with thrombocytopenia syndrome (SFTS), a tick-borne disease, in Miyazaki Prefecture, southern Japan. We collected data on SFTS case numbers, annual temperature and precipitation, species richness of large- and middle-sized mammals, forest perimeter length (indicating the amount of forest boundaries), percentage of agricultural land, human population, and sightseeing place numbers for each 25 km2 grid cell encompassing Miyazaki Prefecture. Through the construction of a model incorporating these factors, we found that longer forest perimeter and higher temperature led to a higher number of SFTS cases. Precipitation, mammal species richness, percentage of agricultural land, human population, and sightseeing point numbers had no effect on SFTS case numbers. In conclusion, climate condition and forest fragmentation, which increase the opportunity for human infection, played a pivotal role in SFTS outbreak.
