Here’s a round up of the key developments from today: Transport secretary Grant Shapps has said there is “no sign” people are deleting the NHS Covid app to avoid being told to isolate. He told Sky News “that’s not actually the evidence” and that the government is “still seeing lots of people downloading the app”. Shapps has said the government is “actively working” on plans to accept vaccination certificates from travellers who receive a coronavirus jab in other countries. Covid-19 vaccines offer high levels of protection for most people with underlying health conditions or who are immunosuppressed, Public Health England (PHE) has said. Reducing the sensitivity of the NHS Covid app to cut the number of people self-isolating is like “taking the batteries out of the smoke alarm”, Keir Starmer has said as he raised questions about the decision to press ahead with reopening on 19 July. Downing Street has urged people to continue using the NHS Covid app and to isolate when advised to do so. Boris Johnson’s official spokesman said the app was an “important tool”. During the first year of the pandemic 25 children and teenagers died as a direct result of Covid-19 in England and about 6,000 were admitted to hospital, according to the most complete analysis of national data on the age group to date. The World Health Organization has said that it is not clear whether Covid-19 booster vaccines would be useful to maintain protection against the virus, as Pfizer-BioNTech said people’s immunity starts to wane six months after they have been vaccinated with their jab. A total of 216,249 confirmed and probable cases of the Covid-19 Delta variant have now been identified in the UK, according to the latest figures from Public Health England. As of June 21, there had been 257 deaths in England of people who were confirmed as having the Delta variant and who died within 28 days of a positive test, Public Health England said. The percentage of people testing positive for Covid-19 is estimated to have increased in all regions of England, the ONS said. In Scotland, around one in 100 people are estimated to have had Covid-19 in the week to July 3 - up from one in 150 in the previous week, and the highest level since the week to January 16. The coronavirus reproduction number, or R value, in England has increased slightly and is between 1.2 to 1.5, according to the latest Government figures. Downing Street has defended Boris Johnson after he was seen leaving England’s Euro 2020 semi-final in his official car without wearing a face covering. There had been a further 35,707 lab-confirmed Covid-19 cases in the UK, the government said. This is the highest daily increase since 22 January. Face coverings will not be routinely recommended in classrooms across Wales from September, the Welsh government has announced. Contact groups will also not be required for school pupils or full-time learners in colleges. Thanks so much for joining me today. We’re going to close this blog now but do follow our global coronavirus liveblog, which is still going: