Epidemiology and etiology of other infectious diarrheal diseases in Zhejiang, 2011-2014

Objective To understand the epidemiology and etiology of infectious diarrheal diseases (other than cholera, dysentery, typhoid and paratyphoid). Methods The epidemiological data of other infectious diarrheal diseases and etiological data of some cases reported in Zhejiang province from January 2011 to December 2014 were collected. The seasonal factors of the epidemiological data and etiological data were extracted by using X11 procedure. The correlation between the two seasonal factors were analyzed. Results There were two annual incidence peaks of other infectious diarrheal diseases, one was in summer and another one was in winter. The cases in children aged 4 years accounted for 50%. The incidence peak in age group 5 years was in winter, and the incidence peak in age group 14 years was in summer, but the incidence peaks in other age groups were not obvious.Rotavirus was the major pathogen (94.82%). The incidence peaks of Rotavirus and Norovirus infections were in winter, but the incidence peak of other pathogens were in summer. The seasonal incidence pattern in age group 8 years was consistent with the seasonal incidence pattern of Rotavirus infection, and the seasonal incidence pattern in age group 8 years was consistent with the incidence pattern of bacterial infection. Conclusion Children aged 4 years were at high risk for other infectious diarrheal diseases. It is necessary to conduct targeted prevention and control according to the different pathogen spectrums and seasonal incidence patterns of other infectious diarrheal diseases.