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Lookup NU author(s): Professor Sarah O'Brien
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
Background: Outbreaks of infectious gastroenteritis are common in care homes for the elderly. Norovirus can cause these outbreaks, but diagnosis is frequently based solely on clinical characteristics. Our objective in this study was to describe the epidemiology of norovirus and other gastrointestinal pathogens in these settings. Methods: We analysed surveillance data from gastroenteritis outbreaks reported in North East England between 04 July 2016 to 01 July 2018. Stool samples taken during these outbreaks were tested for a range of viral and bacterial pathogens. We described the epidemiology of these outbreaks and explored the characteristics of norovirus outbreaks versus from other viral causes using multivariable logistic regression. Results: From the 566 care home gastroenteritis outbreaks in this study, we found that norovirus was the pathogen most frequently isolated. Norovirus was detected in 64% of outbreaks with a pathogen identified. Sapovirus was found in 13%; rotavirus in 11%. We found that norovirus outbreaks were associated with higher attack rates (aOR 1.03, 95% CI 1.01–1.05) and fewer cases sampled (aOR 0.74, 95% CI 0.60–0.91), compared to outbreaks caused by other viral pathogens. Conclusions: These results are important as they quantify the contribution of norovirus to gastroenteritis outbreaks in care homes. Given this evidence, we emphasize the importance of non-specific outbreak interventions that can affect the impact of all such outbreaks. We further recommend that these findings are used to inform the implementation strategies of any norovirus-specific interventions such as a norovirus vaccine.
Author(s): Inns T, Wilson D, Manley P, Harris JP, O'Brien SJ, Vivancos R
Publication type: Article
Publication status: Published
Journal: BMC Infectious Diseases
Online publication date: 31/12/2019
Acceptance date: 23/12/2019
Date deposited: 21/06/2021
ISSN (electronic): 1471-2334
Publisher: BioMed Central Ltd
PubMed id: 31892311
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