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Epidemiological Features and Spatial-Temporal Clustering of Visceral Leishmaniasis - China, 2011-2022
Zhengbin Zhou1, Zhuowei Luo2, Gaiqin Pan3
1National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute of Parasitic Diseases at Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research; NHC Key Laboratory of Parasite and Vector Biology; WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology, China.
What Is Already Known About This Topic?:
Visceral leishmaniasis (VL), transmitted by sandflies, is a zoonotic disease of public health importance in central and western China.
What Is Added By This Report?:
A number of VL hotspots were identified in the border areas of Shanxi-Hebei, Shanxi-Shaanxi, Gansu-Sichuan, as well as the southern Xinjiang provincial-level administrative division (PLAD). Mountain zoonotic visceral leishmaniasis (MT-ZVL) expanded rapidly in the mountainous regions of Shaanxi, Shanxi, Henan, Hebei, Beijing, and Gansu PLADs from 2011 to 2022. A notable resurgence of MT-ZVL has occurred, with 671 cases in 66 historically endemic counties.
What Are The Implications For Public Health Practice?:
Actions are recommended to restrain the rapid expansion of MT-ZVL: Firstly, implement One Health approaches, such as timely diagnosis and treatment of patients, promoting insecticide-impregnated dog collars, and restraining the number of dogs in endemic areas. Secondly, surveillance-response systems for sandflies and infective dogs in potential risk areas should be strengthened.
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