Epidemiological features of bacterial dysentery from 1991 to 2004 in Yongkang city

Objective The present research was conducted to probe into the epidemic features of bacterial dysentery in the period 1991 to 2004．Methods Retrospective analysis of the data on bac-terial dysentery reported from 1991 t0 2004．Results Statistics shown that 4630 cases of bacterial dysentery were reported from 1991 to 2004 accounting for 16.34％of total number of infectious dis-eases reported in the period．It was found that the incidence of bacterial dysentery took on a trend of year-by—year decrease with a highest incidence of 92.74/100.000 and a lowest one of 38.00/100.000 The percentage of bacterial dysentery in infectious diseases rcported from 1991 t0 2004changed from 7.91％ to 38.09％.the incidence was higher in male than in female with the age group of l-3 years having the highest rate The incidence began to increase in April，peaked in Aug and returned to the level prior to April in Nov．Conclusion The incidence rate of bacterial dysentery presents a trend of year-by-year decrease with the rate highest in the age group of 1-3 years．And the rate decreases with age Peak incidence is seen from Jul.to Oct．