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Epidemiological Transition and Spatial Expansion of Mountain-Type Zoonotic Visceral Leishmaniasis - China, 2010-2024
Lulu Huang1, Yanfeng Gong2, Zhengbin Zhou1
1National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; NHC Key Laboratory of Parasite and Vector Biology; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, Shanghai, China.
What Is Already Known About This Topic?:
Mountain-type zoonotic visceral leishmaniasis (MT-ZVL) remains endemic in China and has re-emerged in recent years, with its geographic distribution demonstrating signs of progressive expansion.
What Is Added By This Report?:
Drawing on 15 years of national surveillance data, this study demonstrates a clear resurgence after 2015, a shift in high-risk populations from scattered children to farmers and older adults, and eastward and northward expansion of transmission risk areas.
What Are The Implications For Public Health Practice?:
These findings provide evidence that control strategies should prioritize interventions targeting farmers and elderly-focused interventions, strengthen surveillance in newly affected counties, and implement geographically targeted vector and reservoir control measures.
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