Distribution of Suitable Environments for Phlebotomus chinensis as the Vector for Mountain-Type Zoonotic Visceral Leishmaniasis — Six Provinces, China

Abstract

Summary What is already known on this topic? Phlebotomus chinensis (P. chinensis) is a sandfly and the main vector of mountain-type zoonotic visceral leishmaniasis (MT-ZVL) in China. However, the distribution of suitable environments for the vector has not been studied yet. What is added by this report? This study found that temperate hilly zones in midwestern China are suitable for P. chinensis survival with appropriate environmental factors such as moderate normalized difference vegetation value (NDVI), land use type, landform, temperature, and vegetation. Suitable living conditions for the high-density P. chinensis that caused the reemergence of MT-ZVL already existed. What are the implications for public health practice? Targeted strategies should be implemented to control the vector and the reemergence of MT-ZVL, such as by strengthening key environment monitoring and taking accurate measures for residents, mobile and migrant populations.