An outbreak of norovirus-related acute gastroenteritis associated with delivery food in Guangzhou, southern China
Abstract Background A large number of students at a school in Guangzhou city developed a sudden onset of symptoms of diarrhea and vomiting. To help control the outbreak, we conducted an epidemiological investigation to determine the causative agent, sources, role of transmission and risk factors of...
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doaj-f2774de3651549628d4d2937b8fa98f82021-01-10T12:06:38ZengBMCBMC Public Health1471-24582020-01-012011710.1186/s12889-019-8117-yAn outbreak of norovirus-related acute gastroenteritis associated with delivery food in Guangzhou, southern ChinaYing Lu0Mengmeng Ma1Hui Wang2Dahu Wang3Chun Chen4Qinlong Jing5Jinmei Geng6Tiegang Li7Zhoubin Zhang8Zhicong Yang9Guangzhou Center for Disease Control and PreventionGuangzhou Center for Disease Control and PreventionGuangzhou Center for Disease Control and PreventionGuangzhou Center for Disease Control and PreventionGuangzhou Center for Disease Control and PreventionGuangzhou Center for Disease Control and PreventionGuangzhou Center for Disease Control and PreventionGuangzhou Chest HospitalGuangzhou Center for Disease Control and PreventionGuangzhou Center for Disease Control and PreventionAbstract Background A large number of students at a school in Guangzhou city developed a sudden onset of symptoms of diarrhea and vomiting. To help control the outbreak, we conducted an epidemiological investigation to determine the causative agent, sources, role of transmission and risk factors of the infections. Methods The study population consisted of probable and confirmed cases. An active search was conducted for cases among all students, teachers and other school staff members. A case control study was carried out using standardized online questionnaires. Data were obtained regarding demographic characteristics, gastrointestinal symptoms, personal hygiene habits, history of contact with a person who had diarrhea and/or vomiting and dining locations during the past 3 days. Rectal swabs or stool samples of the cases and, food handlers, as well as environmental samples were collected to detect potential intestinal viruses and bacteria. We calculated odds ratios and 95% confidence intervals (CIs). Results A total of 157 individuals fit the definition of a probable case, including 46 with laboratory-confirmed norovirus infection between March 8 and March 22, 2018. The proportion of students who had eaten delivery food 3 days before the onset of illness in the case group was 2.69 times that in the control group (95%CI: 1.88–3.85). Intake of take-out food 3 days earlier, and exposure to similar cases 72 h before onset and case in the same dormitory were risk factors. A total of 20 rectal swab samples from students, 10 rectal swabs from food handlers and 2 environmental swab samples from the out-campus restauranttested positive for norovirus (GII, genogroup II strain). Conclusions We investigated an outbreak of norovirus infectious diarrhea. Food handling practices carry potential risk of acute gastroenteritis outbreaks owing to a lack of surveillance and supervision. Greater attention should be paid to the monitoring and supervision of food handlers in off campus restaurant to reduce the incidence of norovirus-related acute gastroenteritis associated with delivery food.https://doi.org/10.1186/s12889-019-8117-yNorovirusAcute gastroenteritisDelivery foodOutbreak |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ying Lu Mengmeng Ma Hui Wang Dahu Wang Chun Chen Qinlong Jing Jinmei Geng Tiegang Li Zhoubin Zhang Zhicong Yang |
spellingShingle |
Ying Lu Mengmeng Ma Hui Wang Dahu Wang Chun Chen Qinlong Jing Jinmei Geng Tiegang Li Zhoubin Zhang Zhicong Yang An outbreak of norovirus-related acute gastroenteritis associated with delivery food in Guangzhou, southern China BMC Public Health Norovirus Acute gastroenteritis Delivery food Outbreak |
author_facet |
Ying Lu Mengmeng Ma Hui Wang Dahu Wang Chun Chen Qinlong Jing Jinmei Geng Tiegang Li Zhoubin Zhang Zhicong Yang |
author_sort |
Ying Lu |
title |
An outbreak of norovirus-related acute gastroenteritis associated with delivery food in Guangzhou, southern China |
title_short |
An outbreak of norovirus-related acute gastroenteritis associated with delivery food in Guangzhou, southern China |
title_full |
An outbreak of norovirus-related acute gastroenteritis associated with delivery food in Guangzhou, southern China |
title_fullStr |
An outbreak of norovirus-related acute gastroenteritis associated with delivery food in Guangzhou, southern China |
title_full_unstemmed |
An outbreak of norovirus-related acute gastroenteritis associated with delivery food in Guangzhou, southern China |
title_sort |
outbreak of norovirus-related acute gastroenteritis associated with delivery food in guangzhou, southern china |
publisher |
BMC |
series |
BMC Public Health |
issn |
1471-2458 |
publishDate |
2020-01-01 |
description |
Abstract Background A large number of students at a school in Guangzhou city developed a sudden onset of symptoms of diarrhea and vomiting. To help control the outbreak, we conducted an epidemiological investigation to determine the causative agent, sources, role of transmission and risk factors of the infections. Methods The study population consisted of probable and confirmed cases. An active search was conducted for cases among all students, teachers and other school staff members. A case control study was carried out using standardized online questionnaires. Data were obtained regarding demographic characteristics, gastrointestinal symptoms, personal hygiene habits, history of contact with a person who had diarrhea and/or vomiting and dining locations during the past 3 days. Rectal swabs or stool samples of the cases and, food handlers, as well as environmental samples were collected to detect potential intestinal viruses and bacteria. We calculated odds ratios and 95% confidence intervals (CIs). Results A total of 157 individuals fit the definition of a probable case, including 46 with laboratory-confirmed norovirus infection between March 8 and March 22, 2018. The proportion of students who had eaten delivery food 3 days before the onset of illness in the case group was 2.69 times that in the control group (95%CI: 1.88–3.85). Intake of take-out food 3 days earlier, and exposure to similar cases 72 h before onset and case in the same dormitory were risk factors. A total of 20 rectal swab samples from students, 10 rectal swabs from food handlers and 2 environmental swab samples from the out-campus restauranttested positive for norovirus (GII, genogroup II strain). Conclusions We investigated an outbreak of norovirus infectious diarrhea. Food handling practices carry potential risk of acute gastroenteritis outbreaks owing to a lack of surveillance and supervision. Greater attention should be paid to the monitoring and supervision of food handlers in off campus restaurant to reduce the incidence of norovirus-related acute gastroenteritis associated with delivery food. |
topic |
Norovirus Acute gastroenteritis Delivery food Outbreak |
url |
https://doi.org/10.1186/s12889-019-8117-y |
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