Objective To analyze the characteristics of a norovirus infection cluster epidemic in a kindergarten,and to provide reference for the prevention and control of such incidents. Methods Descriptive epidemiological method was used to analyze the spatial,temporal and population distribution,clinical characteristics and infection causes of the epidemic.Anal swab specimens from some cases and kitchen workers were collected for norovirus testing. Results There were 194 people in the kindergarten,17 of whom had the disease,the attack rate is 8.76%,and all the cases were in the same class.Of the 8 patient specimens,6 tested positive for norovirus nucleic acid.Two specimens of kitchen workers did not test positive. Conclusion The epidemic was caused by norovirus infection.The failure to isolate the first case and the improper disposal of vomit were the reasons for the outbreak.
Key words
Norovirus /
Infectious diarrhea /
Cluster epidemic /
Aerosol transmission
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