Tuesday's coverage was edited by Rob Corp and Hugo Bachega. On the writing team were Lauren Turner, Alexandra Fouché, Yaroslav Lukov and Joseph Lee.

Image source, Press Association

We're pausing our live coverage for now - thanks for staying with us! Just to recap - here are the key developments in the UK and around the world in the past 24 hours:

• In Scotland, restrictions on visiting households are being reintroduced in the Glasgow area after a rise in new infections
• Ministers are considering reimposing quarantine measures for those arriving in the UK from Portugal, sources have told the BBC, amid warnings by travel industry bosses that this will cause "chaos and hardship"

• Hong Kong has started mass coronavirus testing, under a new scheme backed by the Chinese government. A health workers union says the voluntary programme is a waste of resources, while activists say it could be used to collect DNA samples
• In France, masks are being made "systematic" in all shared, enclosed workplaces as of today
• Millions of children across Europe have gone back to school - but social distancing rules widely differ across the continent
• In China, nearly 1.4 million children in Wuhan are also back in the classroom as the authorities have reopened every school and nursery in the city where the pandemic started late last year

Image source, PA Media

Ant and Dec say they are not social distancing from each other as they have formed a "cohort" while filming Britain's Got Talent.

The presenters - full names Anthony McPartlin and Declan Donnelly - say they are being tested for coronavirus every four days so they can continue to work closely together.

Donnelly said on ITV's This Morning: "We are a cohort, we are working on Britain's Got Talent at the moment, and other things, so we get tested every four days so our households are connected and we formed a cohort so we can sit next to each other."

McPartlin added: "We have got to be careful as to where we go and who we see but we've got each other."

The presenting pair, who have worked together for decades, return to TV on Saturday for the semi-finals of the talent show. They are also set to film I'm a Celebrity Get Me Out of Here together later this year - this year from a castle in Wales, rather than the Australian jungle, because of the pandemic.

Image source, Reuters

The World Health Organization (WHO) has said the Covid-19 outbreak in Africa may have passed its peak, but it warns governments not to be complacent as countries relax their restrictions.

The number of new daily confirmed cases overall has been dropping, although some countries are experiencing a rise in cases.

There has also been an average 17% fall in the number of weekly new cases being reported.

That may be because the rate of increase has slowed in some of the most populous countries in the region, like South Africa, Egypt and Nigeria.

So what do we know about the course of the disease in Africa?

Read our full piece with charts and comments by health officials., external

The restrictions in the west of Scotland will affect more than 800,000 people.

This includes 633,120 people in Glasgow, 95,530 in East Renfrewshire and a further 88,930 in West Dunbartonshire.

Scotland's first minister says she knows this will be hard but it is essential and points out she is one of the residents who lives in this area.

"I won't be able to have my family visit me at home and nor will I be able to travel to a different local authority, in my case Ayrshire, to visit them," Nicola Sturgeon says.

The threat of Covid has not gone away and she calls on other parts of the country to the guidelines in place.

No more than eight people from three households should meet indoors and that applies to pubs and restaurants as well.

If you are in the areas of West Dunbartonshire, the City of Glasgow and East Renfrewshire, you should also not visit someone else's home no matter where that is.

The only exception for that relates to extended households.

If any member of your household is identified as a close contact of someone who has covid, the whole household must now isolate for 14 days.

Visiting care homes in these three areas will be restricted to outdoor areas only and hospital visiting will be essential only.

Those who were previously advised to shield will be advised to be extra vigilant.

More detail will be published and the restrictions will last for two weeks, with a review after one week.

Scottish First Minister Nicola Sturgeon has said she is particularly concerned that the level of Covid is high in West Dunbartonshire, the City of Glasgow and East Renfrewshire.

Ms Sturgeon points out transmission appears mainly to be happening inside people's homes and between households.

She announces that from midnight tonight if you live in local authority areas of West Dunbartonshire, the City of Glasgow and East Renfrewshire, you should not host other people from other households in your home.

Alison Roberts
Portugal Correspondent, Lisbon

Image source, Reuters

Portugal's government has called on the public to download a new mobile app to track users' contacts and identify coronavirus contagion risks, dismissing any privacy concerns.

"Don't be afraid," said Prime Minister António Costa at an event in Porto to present the app.

"Understand that it is a civic duty to download this application and signal if you are diagnosed as testing positive."

As classes resume in schools, courts reopen and workers return after their summer holidays, the prime minister stressed there will be more gatherings and more people on public transport, making the app "very important" to interrupt chains of transmission.

Ensuring that Portugal does not have to go back to the kind of lockdown that was imposed in March and April depended "solely on citizens", Mr Costa said.

The "Stayaway Covid" app is a free tool available for both the iOS and Android operating systems.

It aims, based on the physical proximity of other smartphones, to track contagion networks quickly and anonymously, informing users who have in the last 14 days been in the physical vicinity of someone who becomes infected.

Privacy campaigners have, however, expressed concern at the fact that the app was developed in collaboration with Apple and Google, giving those companies at least partial control over its use.

Critics also warn that the app may give users a false sense of security at a time when a relatively small proportion of the population is using it, with around 80,000 downloads so far in a country that has more than seven million smartphone users.

Labour's shadow education secretary, Kate Green, accused Gavin Williamson of a "summer of chaos, incompetence and confusion".

She said it had caused "enormous stress to children, young people, their families and their teachers".

She added: "Ministers must now learn from their mistakes and ensure that keeping schools open and pupils learning is a national priority."

Meanwhile, Mr Williamson said it was a "massive milestone" to have children returning to school.

He said the government is confident the necessary preparations are in place to ensure a "successful return" for all school pupils in England.

Read more on what the Education Secretary has been saying today here.

Protesters at rallies in Berlin with more than 100 participants have been ordered to wear masks from now on.

The decision by local authorities follows last weekend's big demonstrations against Germany's coronavirus restrictions.

Hundreds of protesters, many from the far right, tried to storm the Reichstag, the home of the German federal parliament.

About 300 people were later arrested.

Until Tuesday, masks were not obligatory at open air events in Berlin unless the required 1.5m social distancing rule could not be maintained.

At the same time, the authorities say car or bike rallies in the city will be exempt from the new mask rules.

Stephanie Hegarty
Population correspondent

Image source, Monique Jackson

About a year ago, Monique Jackson watched a Ted talk about mushrooms and was enthralled. Fungi, the speaker said, are the original world wide web, they have a network that runs under entire forests; it enables trees to help each other if they get into trouble.

These days, as she battles the coronavirus for the 24th week in a row, it is something she thinks about often.

She has suspected "long-tail Covid" a distinct reaction to the virus that doctors are just beginning to study. She got sick in March and at first it seemed to be a mild version of the disease but her symptoms have never gone away. Five months later, she is struggling to understand what is happening to her body.

Monique is an extrovert, almost hyperactive she says. In normal times, she practises Thai boxing and jiu-jitsu and cycles 12 miles a day to and from her job in an art gallery in central London.

But the past few months have profoundly changed her life. Now, she has a list on her bedroom wall reminding her to save enough energy each day to brush her teeth.

While her body refuses to co-operate she has found an outlet for her restlessness in Instagram, where she has started an illustrated diary of her symptoms.

Find out more about her story.

The government is determined that exams and assessments should go ahead as planned in England next summer, says Education Secretary Gavin Williamson.

He told the House of Commons that work is being done "to ensure that this is done as smoothly as possible".

Mr Williamson said he was "deeply sorry" to the students who had their grades unfairly downgraded across England this summer.

He said: "This situation has, I know, caused a great deal of stress and uncertainty, and I am deeply sorry that those who have borne the brunt of it have been students themselves.

"I can only apologise to them again for this."

Olga Robinson and Christopher Giles
BBC anti-disinformation unit

There have been false and misleading social media posts claiming that the US Center for Disease Control (CDC), which is responsible for tracking Covid-19, has reduced the total tally of deaths to 6% of the original count.

Over the weekend, President Donald Trump had retweeted a post making these claims, but it was removed by Twitter for violating its rules.

One viral post said: "The CDC quietly updated the Covid number to admit that only 6% of all the 153,504 deaths recorded actually died from Covid. That's 9,210 deaths.

"The other 94% had 2 to 3 other serious illnesses and the overwhelming majority were of very advanced age."

Ryan McNamara, a virologist at the University of North Carolina hit back on Twitter, external: "Those saying 'only 6% die from COVID-19 alone', or some derivation thereof, don't understand how infectious diseases work."

Image source, EPA

Experts say it is common for Covid-19 to exacerbate pre-existing illnesses.

It is also misleading to claim the CDC updated its figures "quietly". The organisation regularly updates its tallies and has included information on comorbidities frequently.

There have been 182,622 coronavirus deaths in the US, according to the latest CDC figures. Influenza and pneumonia are the most common comorbidities in those who have Covid-19 listed on their death certificate.

Causes of death involving Covid-19 in the US follow with what's happening internationally. In England and Wales, of deaths involving coronavirus between March and June 2020 there was at least one pre-existing condition in just over 90% of cases.

The latest UK statistics on coronavirus cases and deaths have been published.

They show that - as of Tuesday - a further three deaths have been recorded of people who died within 28 days of testing positive for coronavirus.

It brings the total UK deaths to 41,504.

Separate figures published by the UK's statistics agencies show there have now been 57,200 deaths registered in the UK where Covid-19 was mentioned on the death certificate.

A further 1,295 lab-confirmed cases of coronavirus have also been recorded, bringing the total to 337,168.

Back in the House of Commons, the Labour Party's shadow health secretary, Jon Ashworth, has questioned the UK government's track and trace figures, saying that an effective system is "absolutely vital" in preventing a "second national lockdown".

He told the Commons: "I listened carefully to the figures (Health Secretary Matt Hancock) outlined but he didn't tell the House that of the numbers actually going into the system, they have fallen in the last week - down from 79% to 72%. This system is not yet world-beating."

In response, Mr Hancock defended test and trace.

Mr Ashworth also said there was "inconsistency" between areas where local lockdown rules had been imposed and asked if there was any political reason behind the decision to lift restrictions in some parts of Greater Manchester.

Mr Hancock replied that the decision was made following scientific advice.

Image source, Reuters

More than one million people in Finland - or almost every fifth person in the Nordic country - have downloaded a coronavirus tracing smartphone app, just a day after it was launched, officials say.

The Koronavilkku (Corona flash) is a free programme developed by the Finnish Institute for Health and Welfare (THL). It is currently only available in Finnish and Swedish, but an English version is expected later this autumn.

Users send a randomly generated code via Bluetooth to others when in close contact, and those who are tested positive are encouraged to enter their status into the app.

The THL hopes the app will help break infection chains.

In a separate development, existing social distancing and other anti-virus measures in Finland's restaurants and bars have been prolonged until the end of September.

Image source, Getty Images

A passenger who flew to Glasgow from a Greek island on a Tui Airlines flight has tested positive for coronavirus.

Tui was told about the case on 26 August, three days after the passenger had flown with them.

It passed contact information of the people seated within two rows of the affected passenger on to contact tracers, and got in touch with those customers too to let them know.

At the time of Tui flight TOM 1745, the passenger was not displaying symptoms.

Onboard there are precautions in place to restrict the spread of the virus, including that masks must be worn, and Tui said this is enforced by the flight crew.

Read more here.

BBC OS

As universities around the world start to reopen, students are coming to terms with new ways of learning and socialising.

BBC OS on World Service radio has been hearing from students in different parts of the world, to find out their experiences of returning to university.

Image source, Anna Shunnarah

Kaddyja is a first-year student at the University of Alabama in the US, where more than 1,200 students have tested positive for Covid-19.

"I'm only in class with about eight to 12 other students," she says. "We don't talk. I'm not used to that, especially coming from a high school where I knew almost everyone. My first few days, I remember just being bored in my dorm from being cooped up all day."

Image source, Supplied

Buthmee is a first-year student at Tokyo International University in Japan, but is doing her studies from her home in Sri Lanka.

"I was hoping I would be in Japan right now with my friends starting university, starting a new life there."

But she says online learning has been an overall positive experience. "We've had videos emailed to us on a daily basis. They've also connected us with counsellors."

Image source, Supplied

But for Ricardo, a third-year student at Rey Juan Carlos University in Spain, the change from his first two years has been difficult.

"I'm very frustrated because I see how a lot of teachers are doing nothing. They say they have uploaded a document, but if you don't try to connect to us, to have video calls to explain things, I'm not going to understand. I'm paying the same price as when it was full attendance in campus."

But he understands the importance of social distancing, having caught Covid-19 while working at his family restaurant.

He and his friends are finding new ways of socialising. "We're making video calls every day and using Netflix Party to watch films together. We are doing good."

Matt Hancock has also been updating MPs about a new rapid coronavirus test - that can also pick up winter illnesses, and can be administered by non-healthcare professionals.

The new test will provide "on-the-spot results in under 90 minutes, helping us to break chains of transmission quickly".

He also spoke of new rapid saliva tests - which are currently being piloted - which he said "do not require a trained health professional to operate them, so they can be rolled out in more non-clinical setting".