Transmission Risks of Mountain-Type Zoonotic Visceral Leishmaniasis - Six Endemic Provincial-Level Administrative Divisions, China, 2015-2020

Xinyi Wang; Shang Xia; Jingbo Xue; Zhengbin Zhou; Yuanyuan Li; Zelin Zhu; Yi Zhang; Qiang Wang; Shizhu Li

doi:10.46234/ccdcw2022.029

Transmission Risks of Mountain-Type Zoonotic Visceral Leishmaniasis - Six Endemic Provincial-Level Administrative Divisions, China, 2015-2020

China CDC Wkly. 2022 Feb 25;4(8):148-152. doi: 10.46234/ccdcw2022.029.

Authors

Xinyi Wang¹, Shang Xia^{1

2}, Jingbo Xue^{1

2}, Zhengbin Zhou¹, Yuanyuan Li¹, Zelin Zhu¹, Yi Zhang^{1

2}, Qiang Wang¹, Shizhu Li^{1

2}

Affiliations

¹ National 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, Shanghai, China.
² School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

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.

Keywords: Phlebotomus chinensis; mountain-type zoonotic visceral leishmaniasis; transmission risk.

Copyright and License information: Editorial Office of CCDCW, Chinese Center for Disease Control and Prevention 2022.

Grants and funding

Supported by the Research on Prediction and Early Warning and Intervention Technology of Meteorological Sensitive Parasitic Diseases (No. 2017FY101203), Science and Technology Research Project of the Shanghai Municipal Health Commission (No. 20194Y0359), the Fifth Round of the Three-Year Public Health Action Plan of Shanghai (No. GWV-10.1-XK13)