Abstract
Objective To analysis the epidemiological characters of an infectious diarrhea outbreak in a middle school in Hubei province, and to provide evidence for prevention and control measures. Methods Field epidemiological method was used in case definition and patient search. Samples from patients, kitchen workers and related environment were collected for laboratory testing. Descriptive epidemiology and case-control study were used in the analysis. Results Eighty-five cases were identified and the attack rate was 31.6% (85/269). The onset time of 71.8% (61/85) of the cases was 8:00 to 24:00 on February 15, 2017. Nucleic acid of norovirus was GⅡ positive in the anal swabs of 17 patients (including 16 students and 1 teacher) and in 2 cases of silent infection (kitchen workers). Case-control study suggested that breakfast on February 14, 2017 was a risk factor for onset (odds ratio = 21.77, 95%CI: 2.61-181.77). Conclusions The outbreak was associated with contamination by norovirus. Silent infection in kitchen workers may be associated with the outbreak. Key words: Norovirus; Diarrhea; Outbreaks; Epidemiology
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.