More than half a million people in England were pinged by the NHS Test and Trace app in a week, the highest figure recorded.
A total of 520,194 alerts were sent to users of the NHS COVID-19 app in the week to July 7, telling them they had been in close contact with someone who had tested positive for coronavirus and to self-isolate.
This is up from 356,677 the previous week – a rise of 46% – and is the highest weekly figure since data was first published in January.
It comes as some companies are reportedly missing 20% of their workers.
The union said large numbers of workers are being told to self-isolate, with companies in the automotive industry particularly affected.
This morning Communities Secretary Robert Jenrick said the government is “concerned” about the number of people off work due to being “pinged” by the app.
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Mr Jenrick told LBC radio today: “It is important that we have the app, that we take it seriously, that when we do get those messages we act accordingly.”
But he said ministers would give “further thought” on how the government can ensure it is a “proportionate response”.
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From Monday, the legal requirement to wear face masks indoors in England will end.
He added: “We are concerned about absences as a result of being pinged, for example. That is one of the reasons why we do need to move to a more proportionate approach.”
Mr Jenrick was forced to defend the government’s handling of COVID-19 rules, branded a “total shambles”.
He insisted the nation is moving into a “new phase” where “we all exercise our personal judgement”.
Now might be a good time to reset the way app works
The huge jump in numbers will concern the government.
Boris Johnson keeps pointing to the success of the vaccine rollout and the protection it offers. But he cannot afford to disregard the steep rise in the number of people being pinged by the NHS app.
We know infection rates are rising so we expect more people be alerted by the app. There was much talk last week that Health Secretary Sajid Javid had asked for the app’s sensitivity to be looked at following pressure from employers and businesses warning of severe staff shortages.
Now might be a good time to reset the way app works. It is based on proximity and duration: it calculates risk based on how close you were to someone and for how long. It does not know if these two contacts are vaccinated, standing back to back or in a well-ventilated area.
But reports in some of the papers today suggest the government is rowing back on changing the sensitivity right now as case numbers continue to surge. It is still one of the the best ways to gauge the growth in infections.
Next month the rules will change meaning double jabbed people will no longer be asked to self isolate. But that is still a number of weeks away.
We are likely to see a surge in infections in the coming days as the ‘football effect’ kicks in. The scenes of fans gathering to enjoy the Euros worried many epidemiologists.
And next week all restrictions in England will be lifted driving infections up even further and faster.
But Welsh First Minister Mark Drakeford said it is “difficult” for people in England to know exactly what is required of them.
And he urged Westminster to follow a four-nation approach.
“It is the UK government that is the outlier and if they were prepared to bring themselves into line with the decisions that have been made in Scotland and in Wales, for example, that would be clearer and simpler for everybody,” Mr Drakeford told Good Morning Britain.
The TUC slammed the official guidance as a “recipe for chaos and rising infections”.
And shop workers union Usdaw described it as a “real mess”, offering no assurances for employees or customers.
Meanwhile Dr Roger Barker, policy director at the Institute of Directors, said firms are “understandably confused” by the government’s “mixed messages and patchwork requirements”.
Two women have died following reports of a stabbing in Milton Keynes on Christmas Day, police have said.
A dog injured in the incident in Bletchley also died after being taken to the vets.
A man and a teenage boy suffered serious injuries.
A 49-year-old man from Milton Keynes has been arrested on suspicion of murder and attempted murder and remains in custody.
Officers were called to a block of apartments in Santa Cruz Avenue just after 6.30pm on Christmas Day following reports of a stabbing.
The two women, aged 38 and 24, died at the scene, Thames Valley Police said. Their next of kin have been informed.
The injured man and teenage boy were taken to hospital and are both in a stable condition.
Police said the parties are known to each other.
Senior investigating officer Detective Chief Inspector Stuart Brangwin said: “Firstly I would like to extend my deepest condolences to the families of the women who have tragically died in this shocking incident.
“We have launched a double murder investigation, which may be concerning to the wider public; however, we have made an arrest and are not looking for anyone else in connection with this incident and the parties are known to each other.”
A man has been arrested after a woman in her 80s was killed in a Christmas Day motorway crash.
A white Ford Fiesta and a black Volkswagen Tiguan collided on the A1(M) near Darlington just after 8.30pm, North Yorkshire Police said.
The passenger of the Ford Fiesta, a woman in her 80s from the Durham area, suffered serious injuries and died at the scene.
The car’s driver, a man in his 80s from the Durham area, was taken to hospital in a serious but stable condition.
The driver of the Volkswagen, a man in his 20s from the Durham area, was arrested on suspicion of causing death by dangerous driving.
He has now been released under investigation.
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The motorway was closed until around 8am on Boxing Day for collision investigators and National Highways to assess the road surface.
It is now open in both directions but with a lane closure still in place as of 9.30am.
Police have appealed for witnesses and dashcam footage of the crash, which happened on the northbound carriageway between Junction 57 (A66(M) junction) and Junction 58 (Merrybent).
The force also thanked members of the public who assisted at the scene.
A man has been charged with murdering a woman whose body was found nine days after she went missing.
Police said extensive searches and appeals were launched to find Mariann Borocz after she vanished on 14 December.
Her body was discovered at a property in Bolton, Greater Manchester, on Christmas Eve.
Christopher Barlow, 61, from Bolton, has been charged with her murder and has been remanded in custody ahead of an appearance before magistrates on Thursday.
Greater Manchester Police said Ms Borocz’s family are being supported by specialist officers.
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Detective Chief Inspector Tony Platten thanked those who spoke to officers and shared the missing person appeals.
“On behalf of the entire investigation team, our condolences remain with Mariann’s family as they try to come to terms with her death,” he said.
“Our investigation is moving at pace, and we are continuing to work hard to build a full timeline of events leading up to Mariann’s death.
“As part of our investigation, we are once again appealing for additional information from the local community.”