Population survey of Pomacea spp. in Shandong Province and preliminary study on the risk of population infection with Angiostrongylus cantonensis
10.3760/cma.j.cn231583-20220323-00087
- VernacularTitle:山东省福寿螺种群调查及人群广州管圆线虫病患病风险初探
- Author:
Yongbin WANG
1
;
Jun LIU
;
Haitao HAN
;
Longjiang WANG
;
Yuejin LI
;
Lijun MA
;
Benguang ZHANG
;
Xiangli KONG
;
Ge YAN
;
Yunhai GUO
;
Yan XU
Author Information
1. 山东省寄生虫病防治研究所 山东第一医科大学（山东省医学科学院），济宁 272033
- Keywords:
Angiostrongylus cantonensis;
Pomacea spp.;
Morphological identification;
Genetic identification;
Population investigation;
Transmission risk
- From:
Chinese Journal of Endemiology
2023;42(7):580-585
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the population distribution of Pomacea spp. in Shandong Province and the risk of angiostrongyliasis cantonensis in the local population, and to provide a basis for scientific prevention and control of related diseases. Methods:From July to December 2021, Yanzhou District of Jining City, Ningyang County of Taian City, and Dongying District of Dongying City were selected as surveillance sites to investigate the population and distribution range of Pomacea spp., live snail samples were collected for morphological and genetic identification, and Pomacea spp. infected with the larva of Angiostrongylus cantonensis was detected by lung test. At the same time, sentinel hospital case surveillance was carried out in Yanzhou District, Jining City, and questionnaire was used to study the local residents' awareness of angiostrongyliasis cantonensis and their personal health behaviors. Results:A total of 312 live snail samples were collected. After morphological identification, they were all Pomacea spp.. After gene sequencing, two populations of Pomacea canaliculata and Pomacea maculata were found. No positive snails infected with Angiostrongylus cantonensis were found. A total of 126 patients with headache as the main neurological symptom were admitted to the sentinel hospital, but there were no monitoring cases that met the inclusion criteria. Among the survey population, 48.38% (134/277) of the respondents had heard of angiostrongyliasis cantonensis, 44.77% (124/277) knew that eating Margarya melanioides might cause angiostrongyliasis cantonensis, and 83.39% (231/277) had no related unhealthy eating behavior. Conclusion:Pomacea spp. is found and reported for the first time in Shandong Province, and there is a risk of population infection with angiostrongyliasis cantonensis.
