Epidemiological characteristics and influence factors of human brucellosis in Jilin Province in 2011-2017 / 中华地方病学杂志

ABSTRACT

Objective To analyze the epidemiological characteristics and influence factors of human brucellosis in Jilin Province and provide scientific basis for enacting prevention and control strategy to brucellosis in the new period.Methods Descriptive epidemiological methods were used to analyze the epidemiological characteristics (regional distribution,time distribution,population distribution,etc.),influencing factors (risk factors,protective measures and epidemic prevention),epidemic links,detection methods,clinical stages and prognosis of reported brucellosis cases in Jilin Province from 2011 to 2017.Results From 2011 to 2017,12 116 cases of brucellosis were reported in Jilin Province,with an average incidence of 6.30/100 000.The annual incidence rates were 7.51/100 000,7.11/100 000,7.36/100 000,6.58/100 000,5.90/100 000,5.38/100 000 and 4.24/100 000,respectively.The reported cases were mainly distributed in Songyuan City and Baicheng City,accounting for 73.29％ (8 880/12 116) of the total number of reported cases;the time was from January to July,and the peak was from March to May.The age of onset ranged from 20 to 70 years old,mainly in young and middle-aged adults,accounting for 95.86％ (11 615/12 116) of the total number of reported cases.The following factors were studiedto take protective measures rate,human and animal mixed live,the same water source,colony house housing disinfection,manage abortion,buy animal quarantine,raise livestock immunity,and the proportion of these factors in each year was 24.38％ to 43.33％,3.11％ to 17.35％,63.68％ to 76.58％,25.40％ to 35.07％,21.66％ to 34.49％,9.32％ to 29.66％,26.09％ to 45.45％,respectively.The main infection source was sick sheep,accounting for 96.72％ (11 718/12 116).Skin mucosa was the main route of transmission,followed by digestive tract,accounting for 61.55％ (7 458/12 116) and 34.17％ (4 140/12 116),respectively.The main transmission factors were apoblema and flying dust,accounting for 55.68％ (6 746/12 116) and 35.62％ (4 316/12 116),respectively.The number of reported cases of brucellosis was 90.55％ (10 971/12 116) through passive monitoring.The clinical stage was mostly acute,accounting for 92.01％ (11 148/12 116).Healing and improvement accounted for 60.80％ (7 367/12 116) and 37.93％ (4 596/12 116),respectively.Conclusions Brucellosis has dropped slightly in Jilin Province in 2011-2017,but remains high;the epidemic situation is still grim.We should further strengthen monitoring,health education and health promotion,team construction,in order to effectively control the occurrence of human brucellosis.