Epidemiological features of brucellosis from 2010 to 2016 in Weinan, Shaanxi Province / 中华地方病学杂志

ABSTRACT

Objective To analyze the trend and epidemiological features of human brucellosis from 2010 to 2016 in Weinan,Shaanxi Province,and to provide scientific data for effective control of human brucellosis.Methods The data were obtained from the China Disease Surveillance Information Management System and the brucellosis monitoring and epidemic survey of Weinan City from 2010 to 2016.The "three distribution" of brucellosis,the positive rate of serological test of the key group and the infecting route of the epidemic were analyzed using descriptive epidemiology method.Results A total of 1 624 brucellosis cases were reported in Weinan City from 2010 to 2016 and none death case occurred.The morbidity rose from 1.96/100 000 in 2010 to 11.16/100 000 in 2014.The morbidity fallen from 5.46/100 000 in 2015 to 3.33/100 000 in 2016.The reported cases distributed in 10 counties of Weinan and mainly concentrated in Dali County (682 cases),Chengcheng County (269 cases) and Pucheng County (225 cases),accounting for 72.41％ (1 176/1 624).There were brucellosis occurring in all months of the year.The age group distributed mainly from 40 to 64 years old which accounted for 63.67％ (1 034/1 624) of the total reported cases.The peasants accounted for 91.75％ (1 490/1 624) in all cases.Men were significantly higher than women and the morbidity ratio of male to female was 3.28 ∶ 1.00 (1 245 ∶ 379).A total of 15 126 key occupational persons were tested and the positive rate of serology was 2.21％ (335/15 126) annually.The feeding and delivery process were the main ways of infection.Conclusions The brucellosis epidemic in Weinan shows a trend from rise to decline.The middle-aged male peasants account for major population in all cases and the ways of infection are diversified.