Thank you for joining us throughout the day, as we followed the latest news about the coronavirus pandemic around the world.

We are pausing our coverage overnight, but will be back tomorrow morning with the latest breaking news and analysis.

Our live page today was written and edited by: Kevin Ponniah, Henri Astier, Vicky Baker, Joshua Nevett, Kelly-Leigh Cooper, Sarah Collerton, Becky Morton, Saj Chowdhury, Steve Sutcliffe, Emlyn Begley, Kathryn Snowdon and Patrick Jackson.

As our coverage winds down for the day, here are some of the latest developments:

• Global confirmed cases of Covid-19 have now exceeded four million, according to Johns Hopkins University tracking, with more than 277,000 deaths reported

• Former US President Barack Obama has condemned Donald Trump's pandemic response as "an absolute chaotic disaster"
• The UK government will proceed with "extreme caution" exiting lockdown restrictions, according to the country's transport secretary
• Billionaire Tesla boss Elon Musk has pledged to move the electric carmaker's headquarters out of California over local coronavirus restrictions
• It has been announced that the Maracana football stadium in Rio de Janeiro will be used as a hospital for Covid-19 patients

Image source, Sunday Telegraph

As well as unveiling a new Covid-19 warning system, Boris Johnson will also tell the UK public to "stay alert, control the virus and save lives" as he shifts his messaging in the battle against the virus, the Sunday Telegraph has reported, external.

The new slogan marks a change from the "stay home" message pushed by the UK government since the start of the lockdown.

In his address to the nation tomorrow evening, the prime minister will call on workers and businesses to "stay alert" by following strict social distancing rules, as the government encourages those who cannot work from home to being returning to offices and factories, according to the paper.

The first confirmed case of coronavirus in the UK was on 31 January. Since then more than 30,000 people have died with the disease and thousands more have needed hospital treatment.

Here's how the government's strategy has shifted in the 100 days since the first case.

Ben Wright
BBC political correspondent

Tomorrow, the UK Prime Minister Boris Johnson will announce the launch of a new Covid-19 alert system that will track the virus threat and explain the relevant measures the government is taking.

It will rank the virus threat on a scale from one to five and adjust according to data such as the rate of transmission and number of cases.

On Sunday the prime minister will say we are currently at stage four but moving towards stage three.

The new system will apply to England only but the government is working with the devolved administrations as they develop their own.

It is understood the system will be similar to the one used to keep the public informed about the terror threat level.

The alert system will also reflect the virus threat in different parts of the country. That could mean the threat level in different cities - and possibly the lockdown measures that apply - could differ quite widely.

There are now more than four million confirmed cases of Covid-19 around the world, according to data collated by Johns Hopkins University in the US., external

Experts warn the true number of infections is likely to be far higher, with low testing rates in many countries skewing the data.

The global figure includes 1.3 million confirmed cases in the United States alone.

Image source, Anne Bookless

We've been speaking to people who say the way their cities are built makes social distancing impossible.

Anne Bookless in London uses a wheelchair - she says the narrow pavements mean that there isn't enough room for her and other pedestrians to be 2m apart. She has left her house just five times since the lockdown began seven weeks ago, including once for a hospital visit.

Once, she took advantage of the rain: "I realised I couldn't see anyone outside, so I put on my brightest raincoat and raced around the green in my wheelchair. It was glorious to be outside, but I had to go back when the rain stopped."

"I would love to be able to use the pavements safely," she says.

As part of its transport announcement today, the UK government said it will fast track e-scooter trials. They are currently banned on pavements.

But disability campaigners have warned previously that e-scooters discarded on pavements, creating a hazard.

Read more about how our cities could be re-designed for social distancing.

Image source, Getty Images

We have a page where we try to answer your coronavirus questions, from issues about personal health to your finances.

The latest posters are:

• Can people would have been furloughed in the UK get another job and be paid twice?
• When children go back to school - will they be held back a year, or move up to the next one?

Click here to send in your questions.

Image source, Getty Images

Dynamo Dresden, who play in the second tier of German football, have placed their entire squad and coaching staff in isolation after two players tested positive for coronavirus.

The development comes a week before the restart of the Bundesliga season and scuppers their plans to face Hannover 96 next weekend.

"The fact is that we cannot train or participate in games in the next 14 days," sporting director Ralf Minge was quoted by AFP as saying.

German football has been suspended since March and is only being allowed to return with strict rules in place.

The incident proves that any league will be balanced on a knife-edge when football resumes, BBC Sport reports.

Read more on this story

Image source, Getty Images

Welsh dairy farmers hit by the coronavirus outbreak will be entitled to government funding to help cover the cost of lost income.

Wales' devolved government said eligible farmers who have lost more than 25% of their April and May income could get up to £10,000.

Producers will be eligible for help to cover 70% of their lost income.

Welsh Rural Affairs Minister Lesley Griffiths said the "closure of the food service sector has had an immediate and significant impact" on the dairy sector, and hard-hit farms need support.

Eligible dairy farmers in England can already apply under a similar scheme.

Image source, Getty Images

Former US President Barack Obama has strongly criticised his successor Donald Trump over his response to the coronavirus crisis.

In a private call, he called the US handling of the pandemic "an absolute chaotic disaster".

Obama has said he wants to play a larger role supporting Joe Biden in the presidential election in November.

His new remarks were made in a call meant to encourage former staff to work for Biden's campaign, CNN reports.

"It would have been bad even with the best of government," he was quoted as saying in the call. "It has been an absolute chaotic disaster when that mindset - of 'what's in it for me' and 'to heck with everybody else' - when that mindset is operationalised in our government."

France has recorded its lowest daily number of coronavirus deaths for more than a month, with 80 deaths over the past 24 hours.

There has also been a drop in the number of patients admitted to intensive care.

The increase in deaths on Friday was 243, and 178 the day before that.

France is lifting several restrictions on Monday, with some schools reopening and people allowed to travel up to 100km (62 miles) from their homes without getting permission.

The country has had the fifth highest amount of coronavirus-related deaths in the world: more than 26,000.

A spokesman for the South African presidency has defended the government's decision to maintain the lockdown, saying coronavirus continued to pose a grave threat to the country.

The opposition Democratic Alliance has been arguing that there is no reason for the measures to continue. It's gone to court to try to force the government to release the minutes of all meetings about the lockdown.

John Steenhuisen, the DA's interim leader, said decisions were shrouded in secrecy as were being made by a small group of ministers.

The country's lockdown began at the end of March. Food shops are open, but alcohol and cigarette sales are banned., external

Image source, Getty Images

Health officials in Ghana have said more than 500 workers at an industrial facility have tested positive for coronavirus, as the total number of cases jumped by nearly 30% in a single day.

The facility has not been named but it has more than 1,300 workers.

More than 4,000 people in Ghana are known to have the virus - the highest number in West Africa - and 18 people have died. However, Ghana has conducted by far the most tests of any nation in the region.

The jump in new coronavirus cases in Ghana comes just days after the head of public health said infections had reached a peak.

Image source, Reuters

Image source, Getty Images

We've just reported that the UK government is promising £2bn ($2.5bn) to improve cycling and walking infrastructure.

You might be wondering what those changes could look like.

Many cities globally have already begun redesigning their transport systems, both to create more space for residents and to prevent a resurgence in car use after lockdown.

• In Paris, 650km (400 miles) of cycleways are being built, external, and subsidies offered to cyclists
• Italian city Milan is building cycle lanes, widening pavements and introducing 30km/h (20mph) speed limits.
• In the US, 75 miles of streets in New York City , externalwill be allocated to pedestrian and cyclists
• After pop-up bikes lanes were built in Berlin, residents in 133 other German cities have submitted applications to do the same
• Bogotá, in Colombia, opened up nearly 120km of bike routes in mid-March

You can read more about how cities could be redesigned here.

Image source, AFP

Tesla boss Elon Musk has threatened to move operations of his electric car firm away from California because of coronavirus restrictions.

Almeda County, where Tesla's main US plant is, said the company did not meet its local criteria for re-opening manufacturing on Friday.

Responding in a series of Twitter conversations on Saturday, Musk said he was "immediately" filing a lawsuit over their actions, which he said violated "our constitutional freedoms" and "common sense".

He also insisted his company's experience in China meant it knew "far more" than local officials, external about safety restrictions.

California has recorded more than 2,600 deaths from the virus, one of the highest rates in the US.

Helena Wilkinson
BBC News correspondent

A key question about Covid-19 is why men appear to be more at risk of serious illness than women.

NHS England and King’s College London (KCL) are investigating if the answer lies partly with the hormone oestrogen.

Menopause specialist Dr Louise Newson says it may provide a protective role in fighting the disease.

She has teamed up with a team at KCL running a Covid-19 tracker app. The researchers have expanded their symptom tracker to look at whether oestrogen may influence outcomes.

More than three million people are currently using the app in the UK.

Dr Newson says women have an ability to fight viruses a lot more efficiently than men, and that the cells that fight infections have oestrogen receptors on them.

“This means they respond to oestrogen, and oestrogen can re-programme these cells, make them more effective and increase their number”, she says.

A further four people have died in Northern Ireland after testing positive for coronavirus, taking the total number of deaths recorded there to 430.

Image source, Getty Images

Rio de Janeiro's Maracanã - one of the world's most famous football stadiums - is hosting a coronavirus hospital.

A temporary structure has been built in its grounds and will provide about 400 beds by next weekend.

Two similar hospitals are due to open soon in Rio, including one in the Olympic Park.

Brazil has one of the highest rates of infections in the world.

The medical journal The Lancet wrote a scathing editorial , externalthis week saying Brazilian President Jair Bolsonaro "needs to drastically change course".

New analysis by the New York Times, external suggests a third of all US deaths can be traced to care homes and nursing facilities.

Officials have not yet revealed breakdowns of fatalities but data compiled by the newspaper suggests at least 25,600 care home residents and workers have died with Covid-19.

Their reporting suggests 143,000 cases have been detected at some 7,500 facilities.

Image source, EPA

In some states, including Massachusetts and Pennsylvania, care home deaths account for more than 50% of the state total.

The Centers for Disease Control and Prevention says in its own guidance that nursing facilities are at the "highest risk" of virus , externalspread because of their communal living arrangements. They urge facilities to take "aggressive" action to protect their residents, including restricting visitors and implementing mandatory health checks.

Almost 1.3m total cases and more than 77,000 deaths have been recorded nationally.