Abstract
What is already known about this topic?Mountain-type zoonotic visceral leishmaniasis (MT-ZVL) cases in China have increased significantly between 2015 and 2020. A total of 25 regions had re-emerged yielding 88 MT-ZVL indigenous cases, while the total number of visceral leishmaniasis cases declined.What is added by this report?The transmission risk of MT-ZVL showed a trend of patchy dissemination centered on major endemic areas and medium-high risk occurrence areas of Phlebotomus chinensis with discrete foci. Multi-point re-emergence and local outbreaks of MT-ZVL were trending in historically endemic areas. What are the implications for public health practice?Risk identification and early warnings of MT-ZVL are essential in formulating precise prevention and control strategies in China. More frequent monitoring, establishing a mechanism of joint prevention and control, and highlighting health education are recommended.
Highlights
Between 2015 and 2020, the number of mountain-type zoonotic visceral leishmaniasis (MT-ZVL) cases increased significantly in China, and a total of 25 county-level administrative divisions (CLADs) had re-emerged with 88 cases reported, while the total number of visceral leishmaniasis (VL) cases declined [1,3]
A riskmatrix evaluation on the transmission risks of Mountain-type zoonotic visceral leishmaniasis (MTZVL) was conducted on account of the classification scores of the endemic CLADs and the occurrence probabilities of Ph. chinensis
Results showed a trend of patchy dissemination centered on major endemic areas and medium-high risk occurrence areas of Ph. chinensis with discrete foci
Summary
Transmission Risks of Mountain-Type Zoonotic Visceral Leishmaniasis — Six Endemic Provincial-Level Administrative Divisions, China, 2015–2020. To identify the key risk areas, a risk-matrix was used to assess the transmission risk of MT-ZVL in six endemic provincial-level administrative divisions (PLADs) in China. Data such as the indigenous cases (2015–2020) and the occurrence probabilities of the main vector Phlebotomus chinensis (Ph. chinensis) were collected, and the comprehensive scores were calculated. In the medium-high risk areas identified, the recommended strategies are more frequent monitoring of sandflies, canines, and mobile population, establishing a mechanism of joint prevention and control, and highlighting health education to the public.
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