Wang Qing-Zhi, Wu Yu-Ju, Ye Rui-Xue, Cao Min, Gan Mao-Li, Li Tiao-Ying, Chen Xing-Wang, Zhou Huan
Department of Health and Social Behavior Science, West China School of Public Health, Sichuan University, Chengdu 610041, China.
Institute of Parasitic Diseases, Sichuan Center for Disease Control and Prevention, Chengdu 610041, China.
Sichuan Da Xue Xue Bao Yi Xue Ban. 2018 Sep;49(5):754-758.
To determine the transmission characteristics of infections from a social network perspective in Tibetan school children in Sichuan.
A cluster sampling strategy was adopted to select two primary schools with high level of infections in the Tibetan agriculture areas of Liangshan prefecture, Sichuan province. All of the students from the selected schools were enrolled in the study. Their social network data, including classroom seating, dormitory roommates, best playmates, and those who shared meals and snacks etc, were collected by trained investigators. Stool and blood samples of the students were collected for parasite detection. The transmission network of infections and the overall social network of school children were analysed.
A total of 644 children participated in the study. Taenia solium were found in 6.11% of the stool samples and 13.25% blood samples returned with seropositive. The transmission was centered around the sources of infections: dormitory-clustering in the boarding school and playmate-clustering in the day school. The overall social network analysis revealed "core people" (more relationships), "information disseminators" (closer to other nodes) and "information hubs" (between two nodes) in both schools.
Close contacts in dormitories and playgrounds are the main sources of transmission of cysticercosis in the Tibetan schools. The "core people" "information disseminators" and "information hubs" are critical for the prevention and control of cysticercosis in the future.
从社会网络角度确定四川藏族学龄儿童感染的传播特征。
采用整群抽样策略，在四川省凉山州藏族农业区选取两所感染率较高的小学。所选学校的所有学生均纳入研究。由经过培训的调查人员收集他们的社会网络数据，包括课堂座位、宿舍室友、最好的玩伴以及共享饭菜和零食的人等。采集学生的粪便和血液样本进行寄生虫检测。分析感染的传播网络和学龄儿童的整体社会网络。
共有644名儿童参与研究。粪便样本中猪带绦虫检出率为6.11%，血清学检测阳性的血液样本检出率为13.25%。传播以感染源为中心：寄宿学校以宿舍聚集为主，日校以玩伴聚集为主。整体社会网络分析显示，两所学校均存在“核心人物”（关系较多）、“信息传播者”（与其他节点距离较近）和“信息枢纽”（位于两个节点之间）。
宿舍和操场中的密切接触是藏族学校囊尾蚴病传播的主要来源。“核心人物”“信息传播者”和“信息枢纽”对未来囊尾蚴病的防控至关重要。
