The prevalence trend of human brucellosis in Baotou City, Inner Mongolia from 2005 to 2016

Abstract

Objective To analyze the epidemic characteristics of human brucellosis in Baotou City, Inner Mongolia, and to provide a scientific basis for formulating prevention and control measures. Methods Based on the China Information System for Disease Control and Prevention monitoring date, human brucellosis related information in Baotou City from 2005 to 2016 were collected, and descriptive epidemiological method was used to analyze the distributions of time, area and population of the disease. Results In 2005 - 2016, a total of 5 069 new cases of brucellosis were reported in Baotou City. The annual average incidence rate was 16.01/100 000, ranging from 0.65/100 000 to 35.54/100 000, the lowest was in 2005 and the highest in 2011. From 2005 to 2011, the cases of brucellosis increased rapidly, from 15 cases in 2005 to 957 cases in 2011; it subsequently showed a downward trend, and in 2016 it fell to 358 cases. Each month had new cases, the peak incidence was found from March to August, and the cumulative cases were 3 506, accounting for 69.17% (3 506/5 069). The cases were mainly distributed in agricultural and pastoral areas, of which Damaoqi had the largest number of cases, with 2 136 cases, and the annual average incidence rate was 160.36/100 000. The cases in 25 - 64 years old group was the highest, accounting for 88.06% (4 464/5 069). Farmers had the highest incidence, accounting for 77.14% (3 910/5 069). Conclusion In recent years, the epidemic situation of human brucellosis in Baotou City has shown a downward trend, but it is still at a higher level, and the prevention and control situation is still grim. Key words: Brucellosis; Epidemiology; Epidemic situation analysis