Survey of Schistosoma japonicum infections in wild animals in hilly transmission-controlled areas of Jiangxi Province
10.16250/j.32.1374.2019040
- VernacularTitle:江西省山丘型血吸虫病传播控制地区野生动物血吸虫感染调查
- Author:
Shang-Biao LÜ
1
;
Nian-Gao CHEN
1
;
Yue-Min LIU
1
;
Li-Yuan ZHOU
2
;
Yi-Song WANG
3
;
Fei HU
1
;
Yi-Feng LI
1
;
Min YUAN
1
;
Dan-Dan LIN
1
Author Information
1. Jiangxi Provincial Institute of Parasitic Diseases, Nanchang 330046, China
2. Ruichang Municipal Station of Schistosomiasis Control, Jiangxi Province, China
3. Pengze County Station of Schistosomiasis Control, Jiangxi Province, China
- Publication Type:Journal Article
- Keywords:
Schistosomiasis;
Oncomelania hupensis;
Transmission control;
Hilly area;
Wild animal;
Jiangxi Province
- From:
Chinese Journal of Schistosomiasis Control
2019;31(5):463-467
- CountryChina
- Language:Chinese
-
Abstract:
Objective To understand the situation of Schistosoma japonicum infections in wild animals in transmission-controlled schistosomiasis-endemic areas in Jiangxi Province, so as to provide scientific evidence for implementing precision control interventions and achieving the goal of transmission interruption and elimination of schistosomiasis. Methods Five endemic villages from Ruichang City and Pengze County that were heavily endemic for schistosomiasis in Jiangxi Province, were selected as the study villages. Wild animals like wild mice were captured, and the livers of wild animals were purchased from the snail habitats in the study villages for detection of S. japonicum infections. In the study villages, S. japonicum human infections were screened using indirect hemagglutination assay (IHA) followed by parasitological examinations with miracidial hatching test and Kato-Katz method, and the S. japonicum infection in livestock was tested using a miracidial hatching test with a plastic tube. In addition, snail survey was conducted in the study villages by means of systematic sampling combined with environmental sampling, and the S. japonicum infection in snails was detected using a loop-mediated isothermal amplification (LAMP) assay. Results A total of 240 liver specimens were sampled or purchased from 5 species of wild animals in the study villages, including wild mice, weasels, pigs, deer and rabbits. A total of 172 wild mice were captured, with a 2.91% rate of S. japonicum infection, and there was no S. japonicum infection detected in other wild animals. The prevalence of Capillaria hepatica infection was 12.21%, 1.96% and 12.50% in wild mice, deer and pigs, respectively. In addition, there was no S. japonicum infection found in either humans or livestock in the study villages, and the mean snail density varied from 0.13 to 0.80 snails/0.1 m2 in the study villages. LAMP assay detected S. japonicum infection in 2 tubes in a study village. Conclusions The role of wild animals in schistosomiasis transmission and their potential risks can not be neglected in hilly schistosomiasis-endemic areas of Jiangsu Province after transmission control. Intensified surveillance and targeted control measures should be implemented to consolidate schistosomiasis control achievements.
