The Government Office for Science published the latest estimates of the number as between 0.7 and 1.0, which reflect the state of transmission a fortnight ago. Last week, Prime Minister Boris Johnson said that the number was between 0.5 and 0.9.
The R value or reproduction number, is used to rate a disease’s ability to spread based on an average number of people that one infected individual will pass the virus on to.
A value higher than 1 means that the number of cases will start to rise again.
On Friday, Jenny Harries, a deputy chief medical officer for England, announced the new calculations at the Downing Street briefing.
She said: “If it goes above that number we will start to see an increasing number of cases and we may experience the second peak, so it’s important that we keep monitoring it.”
The R value has increased and if it continues, could reportedly prompt a second outbreak
Last week, Prime Minister Boris Johnson said that the number was between 0.5 and 0.9
The latest figures curated by the scientific advisory group for emergencies, Sage, were calculated based on hospital admissions and deaths, among other sources.
However, the R value contains a time lag due to the nature of the data collection as the events, such as death, take place several weeks after infection.
Consequently, the latest calculations reflect infection rates at least a week before Mr Johnson eased some lockdown restrictions.
The chief executive of the NHS, Sir Simon Stevens, told the Daily Mail that hospital admissions for the virus have halved since the peak of the pandemic last month.
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The latest figures were calculated based on hospital admissions and deaths, among other sources
He reportedly said that hospitals are treating about 9,000 patients a day in England, which is down from 19,000 in April, and admissions were falling by about 2,000 a week.
Speaking at the press briefing on Friday, Dr Harries said: “We know we have slightly different R values.
“In recent weeks care homes have been a heightened interest, and hospitals also, and we keep an eye on those.
“This is very much a national average but it’s quite likely in the communities across the country where people have been working really hard on social distancing measures that the R value will be lower.”
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The R value contains a time lag due to the nature of the data collection
On Friday, Jenny Harries, announced the new calculations at the Downing Street briefing
Keith Neal, emeritus professor in the epidemiology of infectious diseases at Nottingham University, told the Times that if a large chunk of Britain’s transmission were in care homes then a different response from the social distancing measures enforced outside would be required.
Speaking to the Times he said: “If the R is being pushed up by care homes this is not an issue for community transmission.
“Care homes need to be controlled by infection control.
“The R in care homes does not influence your control measures in these circumstances.”
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Mr Neal added that within care homes the R value was “totally irrelevant” and was only applicable when the outbreak escaped into the wider community.
Dr Harries agreed that focusing on the R could obscure nuance when answering questions at Downing Street on Friday.
She said: “It’s a really important measure, but the real outcome that we’re looking for is a reduction in the number of cases and getting rid of the epidemic in the UK.”
There are 34,466 reported coronavirus deaths in the UK
Alan McNally, professor of microbiology at Birmingham University, told The Times that wherever the R value lay, it was still far too early to have considered lifting restrictions.
He said: “There is a huge naive population and still tens of thousands of new infections occurring.”
There are 34,466 reported coronavirus deaths in the UK and over 240,000 confirmed cases.
Published at Sat, 16 May 2020 23:40:00 +0000