No single surveillance system fully captures national changes in norovirus or rotavirus activity; therefore, this report presents data from 4 systems which collectively describe recent trends. Suspected and confirmed norovirus outbreaks reported to HNORS in England by week of occurrence during the 2021/2022 and 2022/2023 seasons compared to the 5-season average Atchison and others. You have rejected additional cookies. During the 2020 to 2021 and 2021 to 2022 seasons there was a shift in the most frequently reported settings of EV outbreaks. During the 2022/2023 season to date, the majority (73%) of samples characterised were norovirus Genogroup 2 (, The Second-Generation Surveillance System (, HPZone is a web-based case and outbreak management system used by Health Protection Teams (, Norovirus characterisation data is produced by the. However, when considering the surveillance data reported here, the magnitude of the reduction is unlikely to be wholly attributable to these control measures alone. Zakikhany and others. Throughout the 2021 to 2022 season up to week 50 of the 2022 to 2023 seasons, reports of suspected and confirmed norovirus outbreaks in hospitals (captured by HNORS) were substantially lower than the 5-season average. Additionally, not all suspected cases are tested for norovirus, often only a proportion of individuals will be tested in any suspected outbreak. In order to capture the winter peak of activity in the reporting period, the norovirus and rotavirus season runs from week 27 in year one to week 26 in year two, that is, week 27 2021 to week 26 2022, July to June. To recap, this is the full list of potential norovirus symptoms as noted by CDC officials: Fever; Headache; Body aches; Stomach pain; Nausea; Vomiting; Diarrhea Data presented here is derived from the Second-Generation Surveillance System (SGSS). Well send you a link to a feedback form. The reasons for the reduction in reporting over the pandemic are considered to be multifactorial (data covering this time period is available at National norovirus and rotavirus bulletins 2021 to 2022: management information and please see the impact of the COVID-19 pandemic on surveillance section for more details). Throughout the 2021/2022 and 2022/2023 seasons to date, reports of suspected and confirmed norovirus outbreaks in hospitals (captured by HNORS),have been substantially lower than the 5-season average. From: UK Health Security Agency Updated point 3 on how to reduce the spread of norovirus. Please see data sources and reporting caveats for more information, for guidance on interpretation of trends and the impact of the COVID-19 pandemic. Latest national UK Health Security Agency (UKHSA) surveillance data shows that laboratory reports of norovirus are more than double the 5-season average prior to the coronavirus (COVID-19) pandemic. National norovirus and rotavirus report, week 19 report: data up to Zakikhany and others. Please see data sources and reporting caveats for more information, for guidance on interpretation of trends and the impact of the COVID-19 pandemic. Health officials are warning consumers not to eat certain raw oysters harvested in Republic of Korea (ROK) due to possible norovirus contamination. Of the 788 norovirus positive samples characterised during the 2022 to 2023 season to date: The 3 most frequent norovirusGIIgenotypes identified were: The most frequently identified norovirusGIgenotypes wereGI.2 andGI.3 (both 5%). National norovirus and rotavirus report, week 1 report: data up to week Register. We are grateful to all who provided data used in this report, including NHS Infection Control and Prevention staff (HNORSusers), UKHSA local (HPTs) and UKHSA regional teams (Field Services) and UKHSA Regional Public Health and Collaborating Laboratories. Epidemiological characteristics of norovirus infection in pediatric Allen and others. You have accepted additional cookies. Find out about the Energy Bills Support Scheme, National norovirus and rotavirus surveillance reports: 2022 to 2023 season, nationalarchives.gov.uk/doc/open-government-licence/version/3, National norovirus and rotavirus bulletins 2021 to 2022: management information, impact of COVID-19 pandemic on surveillance, National norovirus and rotavirus report, week 19 report: data up to week 17 (30 April 2023), Hospital Norovirus Outbreak Reporting System, National norovirus and rotavirus bulletins 2020 to 2021: management information, Rapid declines in age groupspecific rotavirus infection and acute gastroenteritis among vaccinated and unvaccinated individuals within 1 year of rotavirus vaccine introduction in England and Wales. Overall, 76% of outbreaks (16) were laboratory confirmed as norovirus. The best thing you can do is drink water regularly. To enable effective molecular surveillance, it is crucial that samples are obtained from suspected norovirus cases or outbreaks for laboratory confirmation and then norovirus-positive samples are referred on to the Enteric Virus Unit (EVU) for characterisation. Norovirus data include faecal and lower gastrointestinal tract specimen types only. For more information, see Outbreak surveillance section. Across the 2021/2022 season and into the 2022/2023 season the number of reportedEVoutbreaks varied in comparison with the 5-season average. Norovirus outbreaks on cruise ships in 2023 Cruise Norovirus outbreaks updates Norovirus on ships is spread through contaminated water, foods and surfaces (public restrooms, railings, doorknobs, handles, board games-cards-puzzles-toys, etc). Similar to norovirus there was a notable reduction in rotavirus activity from March 2020 onwards. The Hospital Norovirus Outbreak Reporting System (HNORS) is a web-based scheme for reporting suspected and confirmed norovirus outbreaks in Acute NHS Trust hospitals, and captures information on the disruptive impact these outbreaks have in hospital settings. Week number is calculated from date of first case onset forHNORSdata. You have rejected additional cookies. April 3, 2023 12:00 pm According to a recent study by researchers at Princeton University published in the Proceedings of the National Academy of Sciences in August 2021, extreme pandemics like. We use some essential cookies to make this website work. Allen and others. Norovirus: What to do if you catch it and helping to stop the spread The most common GII.4 norovirus strain identified was Norovirus/GII.4/Sydney/2012-like variants. From May to October 2019 and during February 2020, theHNORSwebsite was temporarily offline. This report was produced by the Gastrointestinal Infections and Food Safety (One Health) Division, UKHSA. Over the 4-week period of weeks 18 to 21 2023 reported outbreaks have decreased compared with the previous 4 week period (weeks 14 to 17). Find out about the Energy Bills Support Scheme, National norovirus and rotavirus surveillance reports: 2022 to 2023 season, nationalarchives.gov.uk/doc/open-government-licence/version/3, National norovirus and rotavirus bulletins 2021 to 2022: management information, impact of the COVID-19 pandemic on surveillance, National norovirus and rotavirus bulletins 2020 to 2021: management information, Hospital Norovirus Outbreak Reporting System, Rapid declines in age groupspecific rotavirus infection and acute gastroenteritis among vaccinated and unvaccinated individuals within 1 year of rotavirus vaccine introduction in England and Wales. Year-to-date, there have been 13 outbreaks of norovirus on cruise ships, according to the CDC, the highest number since 2012. Therefore, this report provides an overview of EV activity across England and data should be interpreted with caution. National guidance recommends closure of the smallest possible unit in hospitals. You can change your cookie settings at any time. Data is reported by season rather than calendar year, in order to capture the winter peak of activity in one reporting period (please see interpretation of trends section for more details). Outbreaks in educational settings rose to pre-pandemic levels in the weeks commencing 13 February and 20 February, with the majority being reported in nurseries and other early years settings. The 2021 to 2022 and 2022 to 2023 seasons are compared with the 5-season average calculated from the 5-season period of 2014 to 2015, to 2018 to 2019. You have accepted additional cookies. Follow our guidance below on how to reduce the spread of norovirus. The outbreaks have occurred across six different cruise lines. While norovirus is not related to the influenza virus, it does cause millions of people to sicken yearly. Data presented here is provided by UKHSAs EVU. Norovirus is highly infectious and is easily spread through contact with someone with the infection or with contaminated surfaces. News stories, speeches, letters and notices, Reports, analysis and official statistics, Data, Freedom of Information releases and corporate reports. After COVID-19 restrictions were lifted, norovirus and rotavirus activity began to increase but has not followed the pre-COVID-19 seasonal trends (based on the 5-season period of the 2014/2015 to 2018/2019 seasons, data covering this time period is available at National norovirus and rotavirus bulletins 2021 to 2022: management information). During the 2022 to 2023 season to date, the majority (84%) of samples characterised were norovirus Genogroup 2 (. This monthly report covers the 4-week period between 3 to 30 April 2023. Updated: 10:24, 19 Jul 2021. Dont worry we wont send you spam or share your email address with anyone. Worldwide the most commonly detected norovirus genotype is genogroup II- genotype 4 (GII.4). Norovirus activity over the 4 week period of weeks 18 to 21, 2023 (473 laboratory reports) decreased compared with activity during weeks 14 to 17, 2023 (791 laboratory reports). It is likely that other factors such as, but not limited to, changes in ascertainment, access to health care services and capacity for testing also contributed to the observed reduction due to changes in ascertainment and varied over time. Therefore, trends for the 2019 to 2020, 2020 to 2021 and 2021 to 2022 seasons should be interpreted with caution. Norovirus outbreak: Contagious stomach and intestinal virus spreading Therefore, not all outbreaks reported toHNORSresult in whole ward closure (some closures are restricted to bays only) and not all suspected cases are tested. This molecular surveillance enables detection of novel strains or emergence of existing strains that could lead to a strain replacement event and which have previously been associated with a temporal shift in norovirus activity (2). Emergence of the GII-4 norovirus Sydney2012 strain in England, winter 20122013, The Public Library of Science One, volume 2, article: e88978 (viewed on 17 October 2022), 3. Reporting returned to levels comparable to the 5-season average of the same period pre-COVID-19 in 2022 (Figure 2), generally following the historical pre-COVID-19 seasonal trend from week 13 onwards. The reduction in norovirus reporting to national surveillance during the 2019/2020 and 2020/2021 seasons lead to a period of low referral of norovirus-positive samples for characterisation, therefore this data is not presented. t: . We also use cookies set by other sites to help us deliver content from their services. This molecular surveillance enables detection of novel strains or emergence of existing strains that could lead to a strain replacement event and which have previously been associated with a temporal shift in norovirus activity (2). Please refer to the previous report for the most recent published HPZone EV outbreak data (National norovirus and rotavirus report, week 19 report: data up to week 17 (30 April 2023)). Please note, a report was not published in week 52. Reported rotavirus activity remained low throughout the whole 2020 to 2021 season (data covering this period is available at National norovirus and rotavirus bulletins 2021 to 2022: management information) and into the first half of the 2021 to 2022 season. This season, 225 outbreaks have been reported between Aug. 1 and Jan. 8 in the 14 states that provide norovirus data to the CDC. UKHSA has relaunched the Official Statistics National Norovirus and Rotavirus Report after it was temporarily suspended due to quality issues with the data from the 4 aforementioned data sources during the COVID-19 pandemic period. 24 February 2023. The reduction in norovirus reporting to national surveillance during the 2019 to 2020 and 2020 to 2021 seasons lead to a period of low referral of norovirus-positive samples for characterisation, therefore this data is not presented. Data reported here provide a summary of norovirus and rotavirus activity (includingenteric virus(EV) outbreaks) in England up to reporting week 17 of the 2022 to 2023 season. Prior to the emergence of COVID-19 the majority of outbreaks reported to HPZone were reported in hospital and care home settings. Dehydration can result in hospitalisation so its important to drink plenty of fluids when unwell and contact NHS 111 or your GP surgery if you need advice. 1. You have accepted additional cookies. In weeks 14 to 17 the total number of reported EVoutbreaks remained lower than the 5-season average for the same 4-week period (40% lower, 211 versus 351 respectively). Summer norovirus outbreak could lead to a winter crisis. Therefore, data pertaining to the most recent 2 weeks is not included. The number of outbreaks caused by norovirus have increased in hospitals, schools and care homes, with the majority of outbreaks reported in care home settings. It will take only 2 minutes to fill in. The 3 most frequent norovirusGIIgenotypes identified wereGII.4 (57%),GII.7 (8%) andGII.6 (7%) and the most frequently identified norovirusGIgenotypes wereGI.2 andGI.3 (both 4%). The COVID-19 pandemic led to many changes that likely had a negative effect on surveillance indicators, but which also likely resulted in reduced norovirus and rotavirus (and other EV) transmission. Additionally, not all suspected cases are tested for norovirus, often only a proportion of individuals will be tested in any suspected outbreak. This is a powder that is made up into a solution by adding water. Stomach bug outbreak: Norovirus cases up 30%, CDC warns