Serological surveillance results of brucellosis in key populations with occupational exposure in Haidian district, Beijing, 2014–2018

Objective To analysis the serological surveillance result of brucellosis in key populations with occupational exposure in Haidian district of Beijing from 2014 to 2018, understand the infection status of Brucella in key populations with occupational exposure and provide scientific evidence for the prevention and control of brucellosis.

Methods In selected area of Haidian district, the breeders of cow or sheep and veterinaries were considered as the populations with occupational exposure to Brucella, The blood samples were collected from them for standard tube agglutination test（SAT） to detect the antibody to Brucella according to Diagnostic Criteria for Brucellosis（WS 269－2007）. Software SPSS 22.0 was used for statistical analysis and χ² test was used as the analysis method.

Results A total of 243 serum samples were detected, and 7 serological positive cases without symptoms were detected, the positive rate was 2.88%, there was no significant difference among different years（in Fisher’s exact test, P＞0.05）. The serum positive rate in breeders was 3.03%; the serum positive rate in people who had contact with cow and sheep was 4.84%, the positive rate was 3.66% in people who had contact only with cow and 1.01% in people who had contact only with sheep.

Conclusion The key populations with occupational exposure to Brucella were veterinaries and breeders in Haidian from 2014 to 2018. The main risk animals were cow and sheep. It is necessary to strengthen the health education about prevention and control brucellosis, immunize animals, conduct early detection of infection cases and monitor the epidemic trend for the effective prevention and treatment of brucellosis.