Analysis on surveillance date of brucellosis in Shanxi, 2005–2019

  Objective   To understands the prevalence of brucellosis in Shanxi province from 2005 to 2019, and provide evidence for the prevention and control of brucellosis.

  Methods   The epidemiological surveillance data of brucellosis from both state level and province level surveillance areas in Shanxi from 2005 to 2019 were used for a descriptive epidemiological analysis . Results According to the routine surveillance data, a total of 70 736 brucellosis cases were reported in Shanxi during this period. The lowest incidence rate was 6.96/100 000 in 2005, and the highest was 23.53/100 000 in 2014, the average incidence rate was 13.28/100 000. Up to 36 639 cases of brucellosis were reported in Datong, Shuozhou, Jinzhong, Xinzhou, accounting for 51.80% of the province total .The brucellosis cases mainly occurred during March–July, accounting for 60.24%（42 613/70 736）,The brucellosis cases were mainly young adults (30–69 years old), men, farmers and herdsman. A total of 83 brucellosis outbreaks were reported, including 1 reported as a public health emergency. In the 16 surveillance areas of brucellosis, 144 634 persons were surveyed, in which 33 150 received serological test with 2 436 being positive for Brucella (7.35%). Brucella was isolated from 161 blood samples of 1 034 patients in acute phase (15.57%, 161/1 034), including 160 strains of Brucella melitensis biovar 3 and 1 strain of mutant.

  Conclusion   The prevalence of brucellosis in Shanxi is still serious with high intensity and wide geographic distribution, posing challenge to its prevention and control. It is necessary to further strengthen the brucellosis surveillance, prevention and control should in Shanxi.