Epidemiological characteristics and pathogenic analysis of bacillary dysentery in Zhengzhou city from 2004 to 2016 / 天津医药

ABSTRACT

Objective To understand the epidemic and etiological characteristics of bacillary dysentery and provide scientific evidence for the prevention strategies. Methods The surveillance data and serotyping of bacillary dysentery in Zhengzhou city from 2004 to 2016 were analyzed by descriptive epidemiological method.Results A total of 29 284 cases of bacillary dysentery were reported in Zhengzhou from 2004-2016.The average annual incidence was 31.28 per 100 000 and decreased annually(χ2=103.60,P<0.001).The peak season was from May to October.The incidence was higher in city than that of county,and male was higher than female.The majority of the bacillary dysentery cases was children under 3 years old, and scattered children were the main population at risk.A total of 385 Shigella strains were isolated and identified from 2004 to 2016, and 72.35% (280 strains) of strains were Shigella flexneri. F2a subtype was dominated, but the detective rate of Shigella sonnei was increased gradually. Conclusion Bacillary dysentery is still one of important infectious diseases in Zhengzhou,comprehensive measures should be taken to decrease the incidence including health education in targeted area and people in epidemic season.