Characteristics and risk factors of the kala-azar in Hancheng City, Shaanxi Province, China
WANG Feng-ping1,2, CHEN Sa3, LIU Dong-li3, LI Guang-zhi3, LIU Gang4, ZHANG Yi5, WANG Tian-hai2, WANG Yi-qun6, WANG Wei-hua3, ZHANG Yi3
1. Field epidemiology project of the shaanxi provincial center for disease control and prevention,Xi’an 710054; 2. Center for Disease Control and Prevention of Shaanxi Province, Xi’an 710054, China; 3. Center for Disease Control and Prevention of Hancheng City, Hancheng 715400, China; 4. Center for Disease Control and Prevention of Weinan City, Weinan 710054, China; 5. Education Health Bureau of Qinhan New Town, Xixian New District, Xi’an 710086, China; 6. Wangfeng Health Hospital, Sangshuping Town of Hancheng City, Hancheng 715400, China
Abstract：To investigate the epidemiological status of kala-azar in the city of Hancheng, the epidemiological features and high risk factors were studied in this paper. The initial data based on the reported cases of kala-azar in Hancheng from 2012 to 2016 were collected and described, and then questionnaire survey on the life habits and living environment of the reported patients was performed according to 1∶4 matched case-control study method. All the collected data were analyzed through the Excel 2007, R software. Results showed that there were 599 kala-azar cases reported in Hancheng from 1953 to 2016, and 9 of which died. Based on this result, the average annual incidence of kala-azar in Hancheng was 14.61/100 000, and fatality rate was 1.50%. In addition, there were 18 kala-azar cases reported in Hancheng from 2012 to 2016, and 2 of which died and 72.22% started to get sick during May to September. Most cases were distributed in the northern mountainous of Hancheng, and most patients were farmers. Men were more likely to have kala-azar than women, and adults outnumber children. The main symptoms of these patients with kala-azar included fever and splenomegaly. Using COX regression analysis of predisposing factors showed that keeping the dog in house increased the risk of kala-azar (OR=4.618, 95%CI=1.519-14.039, P<0.05), and other factors had no influence on the risk of kala-azar. Hancheng is an age-old area with regional kala-azar, and new reported cases from 2012 to 2016 showed point shape distribution feature. More importantly, raising the dog in the home is a high risk factor for kala-azar. All the data suggest that Hancheng maybe an epidemic area for hilly or human canine type of kala-azar.
王凤萍, 陈飒, 刘东立, 李广智, 刘刚, 张怡, 王天海, 王益群, 王维华, 张义. 陕西省韩城市黑热病流行特征及高危因素分析[J]. 中国人兽共患病学报, 2018, 34(8): 756-760.
WANG Feng-ping, CHEN Sa, LIU Dong-li, LI Guang-zhi, LIU Gang, ZHANG Yi, WANG Tian-hai, WANG Yi-qun, WANG Wei-hua, ZHANG Yi. Characteristics and risk factors of the kala-azar in Hancheng City, Shaanxi Province, China. Chinese Journal of Zoonoses, 2018, 34(8): 756-760.
2018, Vol. 34 
