POST Online Media Lite Edition


NEWLY REPORTED COVID-19 CASES IN LAST 24 HOURS (6.18.2021, 11:43am CEST, WHO):   U.S. 11,767    India 67,208    Brazil 95,367    France 2,865    Turkey 6,221    Russia 14,057    The United Kingdom 8,808    Italy 1,400    Argentina 25,878    Columbia 27,827    Spain 1,922    Germany 1,330    Iran 10,291    Mexico 3,789    Ukraine 1,188    Peru 7,713    Indonesia 12,624    South Africa 13,246    The Netherlands 1,040    Chile 6,670    Canada 1,053    Philippines 6,637    Iraq 5,189    Pakistan 1,119    Portugal 1,350    Bangladesh 3,840    Japan 1,560    Malaysia 5,738    Nepal 1,768    United Arab Emirates 2,167    Saudi Arabia 1,309    Ecuador 1,161    Bolivia 2,836    Paraguay 2,612    Panama 1,048    Tunisia 2,379    Costa Rica 1,845    Uruguay 2,900    Kuwait 1,646    Guatemala 1,725    Venezuela 1,341    Oman 2,015    Sri Lanka 2,372    Thailand 3,129    Cuba 1,418    Zambia 3,026    Afghanistan 2,203    Mongolia 2,642    Uganda 1,110    China 198    Singapore 27    New Zealand 1    Australia 11    South Korea 507   

Number of norovirus cases annually in UK 800,000 greater than previously thought

Staff Writer |
Researchers from the University of Liverpool have found that the annual number of estimated number of norovirus cases annually in the UK is approximately 800,000 greater than previously estimated.

Article continues below

Norovirus is the commonest cause of gastrointestinal disease across all age groups worldwide.

The majority of cases experience a mild, self-limiting illness and few cases tend to consult primary healthcare. Those that do might not be sampled, leading to huge under-diagnosis and under-reporting.

The low infectious dose of norovirus means that people not exhibiting symptoms (asymptomatic) can potentially contribute to ongoing transmission.

The Second Study of Infectious Intestinal Disease in the community (IID2 study) in the UK estimated the community incidence of norovirus to be 47/1000 population, which equates to around three million cases a year, at a cost to cases and the health service of up to £106 million.

The IID2 study estimated the number of cases who were symptomatic. Using a modified measure of estimating positivity for norovirus, researchers from the National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Gastrointestinal Infections at the University of Liverpool increases the estimation of the population burden of norovirus infection by around 26%, equating to 3.7 million norovirus infections annually.

The results of this study, which have been published in the journal Vaccine, also suggests that around 6% of the population and around 18% of children aged less than five years are affected by norovirus each year.

John Harris, said: “With possible vaccines on the horizon for norovirus, having a good estimate of the total burden of norovirus infection, as well as symptomatic disease will be useful in helping to guide vaccination policy when candidate vaccines become available.”

The research was funded by the NIHR HPRU in Gastrointestinal Infections at the University of Liverpool in partnership with Public Health England; University of East Anglia; University of Oxford and the Institute of Food Research.

What to read next

Mosquito-borne diseases plummet 88.9 percent in Brazil
New cases of hepatitis C infections tripled in U.S.
WHO: 2,000 dead, over 530,000 suspected cholera cases in Yemen