Epidemiology of infectious diarrhea in Shenzhen city in Guangdong province,2007 - 2009

Objective To analyze epidemiology characteristics of infectious diarrhea in Shenzhen and provide evidence for the prevention and control of the disease. Methods Descriptive epidemiological analysis was conducted on the incidence data of infectious diarrhea reported from routine infectious disease surveillance system in Shenzhen during 2007 - 2009. Results A total of 49 503 infectious diarrhea cases were reported with annual incidence rate ranging from 148.6/lakh to 233.0/lakh, the incidence in 2008 was higher than other years. The cases in age group under 5 years old accounted for 84.6% of the total. The cases in children outside child care settings accounted for 83.9%. The incidence peak was during October-December. The first 5 districts reporting high incidences were Baoan, Yantian, Longgang, Luohu and Futian. The cases were mainly reported in general hospitals and in maternal and child health hospitals, accounting for 87.7%. Totally 28 822 cases were caused by rotavirus infection, accounting for 58.2%. Conclusion The infectious diarrhea mainly occurred in 0-5 year old children outside child care settings, and the incidence peak was in autumn/winter seasons. Rotavirus was the major pathogen, so the prevention and control of rotavirus infection is important in the reduction of incidence of infectious diarrhea.