Distribution and seasonal fluctuation of visceral leishmaniasis vectors sandflies in Henan Province in 2023
10.16250/j.32.1374.2024030
- VernacularTitle:2023年河南省内脏利什曼病媒介白蛉分布 与季节消长调查
- Author:
Zhiquan HE
1
,
2
;
Dan WANG
1
,
2
;
Yuanjing KOU
1
,
2
;
Chengyun YANG
1
,
2
;
Yiying SUN
3
,
4
;
Penghui JI
1
,
2
;
Tiantian JIANG
1
,
2
;
Deling LU
1
,
2
;
Dan QIAN
1
,
2
;
Hongwei ZHANG
1
,
2
;
Ying LIU
1
,
2
Author Information
1. Henan Provincial Center for Disease Control and Prevention, Zhengzhou, Henan 450016, China
2. Henan Provincial Medical Key Laboratory of Parasitic Pathogen and Vector, Zhengzhou, Henan 450016, China
3. Luoyang Municipal Center for Disease Control and Prevention, Henan Province, China
4. Luoyang Municipal Key Laboratory for the Etiology of Vector-borne Diseases, Henan Province, China
- Publication Type:Journal Article
- Keywords:
Phlebotomus chinensis;
Visceral leishmaniasis;
Geographical distribution;
Seasonal fluctuation;
Surveillance;
Henan Province
- From:
Chinese Journal of Schistosomiasis Control
2024;36(4):346-351
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the geographical distribution and seasonal fluctuations of visceral leishmaniasis vectors sandflies in Henan Province in 2023, so as to provide insights into the prevention and control of visceral leishmaniasis vectors. Methods A total of 23 counties (districts) were sampled from 18 cities of Henan Province from May to September, 2023 as sandfly surveillance sites, and sandflies were captured using human capture and light trapping methods. Following morphological identification, the changes in the sandfly density were calculated at different months and in different breeding habitats. Results A total of 406 light traps were set at sandfly surveillance sites in Henan Province from May to September, 2023, and a total of 3 137 female sandlies were captured, with an average density of 7.73 sandlies/(light·night). A total of 1 494 Phlebotomus chinensis sandflies were captured, including 1 222 female sandflies, with an average density of 3.01 sandflies/(light·night), and the highest density of P. chinensis was found in Gongyi City [17.00 sandflies/(light·night)]. A total of 5 544 sandflies were captured using the human capture method, including 230 P. chinensis, and the density of P. chinensis appeared a unimodal distribution, with a peak in early July [5.81 sandflies/(light·night)]. Among different breeding habitats, the highest P. chinensis density was detected in pigpens [4.50 sandflies/(light·night)]. Conclusions P. chinensis was predominantly distributed in hilly areas of northern and central-western Henan Province in 2023, and the sandfly density appeared a unimodal distribution. Intensified monitoring of visceral leishmaniasis vectors is recommended.
