That wraps up our live coverage for the day. Thank you for joining us, we'll see you again on Saturday morning.

Here's a roundup of the biggest stories from the US today:

• Apple and Google are jointly developing technology to alert people if they've recently come into contact with others infected with coronavirus
• President Trump says the US will see fewer than 100,000 deaths, much lower than original estimates of 2.2 million in a worst-case scenario
• He also says some states "do not need testing", giving Iowa as an example, because their populations are widely dispersed across large areas
• Dr Jerome Adams, the US surgeon general, says coronavirus is "disproportionately impacting" people of colour
• Dr Anthony Fauci, who is leading the US response to coronavirus, says antibody tests - which would show whether somebody has already had the virus - are close to being ready, and he suggests the US is "starting to see the levelling off and coming down" of cases and deaths
• Thousands of migrants are expelled under coronavirus powers on the US-Mexico border
• Images emerge of coffins being buried in a mass grave on New York City's Hart Island. New York state governor Andrew Cuomo would not comment on this in his press briefing
• And it emerges that there are now more coronavirus cases in New York than in any individual country

Tara McKelvey
BBC News, Washington

Things were already tense at a prison in Lansing, Kansas.

A dozeninmates and 14 staffers got sick from Covid-19, and officials gave outcloth masks to try and stop the infection from spreading further.

Then, onThursday, some of the prisoners began to set fires and smash windows. Theuprising lasted several hours, and it is not clear why it started. No-one wasbadly hurt during the melee, and the facilities were locked down again by earlythe following day.

The violence at the prison - which houses about150 inmates - is the latest sign that people in confinement are becomingincreasingly desperate. Hundreds of people have been infected in US prisons andjails, according to data compiled by the New York Times, and more than twodozen have died.

Prisoners try to protect themselves against the diseaseas best they can. In some places, such as in Lansing, they have begun toexpress their rage in a violent manner.

A Philadelphia, Pennsylvania, transit policy of having all bus passengers wear masks in order to protect employees was shortlived thanks to a couple of videos.

In one clip, a man tells passengers without masks they must exit the bus - though he does not have a mask on himself. In another, police are seen dragging a man off. The footage was shared on Twitter, prompting questions from locals about what exactly the policy was.

The UK is experiencing warm weather across the Easter weekend but people are being urged to stay at home to reduce transmission of coronavirus.

Seen from above, many areas in the UK that are normally crowded during sunny weather seem significantly emptier than they would otherwise be, suggesting people are following the government advice.

Hidden behind protective masks, medics' faces are likely to remain unknown to most of the patients they treat.

That’s a problem for nurses and doctors seeking to comfort theirpatients with a reassuring smile.

But medical staff in the US have found a novel solution - they’ve been attaching photos of theirsmiling faces to their protective clothing.

Respiratory therapist Robertino Rodriguez has been using thetechnique while treating coronavirus patients at Scripps Mercy Hospital in SanDiego.

In an Instagram post, he said he “felt bad for my patients in ERwhen I would come in the room with my face covered”.

The BBC has donated working ventilators from the set of medical drama Holby City.

The corporation said they were delivered to Nightingale Hospital, a new medical facility in London set up to treat coronavirus patients.

Alice Cuddy
BBC News

Image source,Anthony Almojera

AnthonyAlmojera, a senior paramedic in New York City, has written a diary for the BBCof one day in his working life. He says that day - last Sunday - was the worstin his 17-year career.

We arrive at a house and I put on my mask, gown andgloves.

We find a man. His family says he has had a fever andcough for five days. We start CPR and I watch the medics pass a tube down histhroat to breathe for him.

We work on him for about 30 minutes before we pronouncehim dead. I make sure the crews are OK and get back in my truck -decontaminating everything first. I hit the button to go available.

Twenty minutes later, I get another cardiac arrest. Samesymptoms, same procedures, same results.

We hit the button, get another one.

Hit the button after that, get another one.

There's only one patient we've seen so far who I feelwasn't Covid-19 and that's because it was a suicide. Imagine: I was there andmy brain felt relief. This person's dead and it's a suicide. I felt relief thatit was a regular job.

It is now around 11:00 and I've done about six cardiacarrests.

In normal times, a medic gets two or three in a week,maybe. You can have a busy day sometimes, but never this. Never this.

Image source,Getty Images

Apple and Google are jointly developing technology to alert people if they've recently come into contact with others infected with coronavirus.

Their plan is to initially help contact-tracing apps from public health authorities to run efficiently. Ultimately, they plan to develop a separate "Bluetooth-based contract tracking platform" to gather extensive data which apps from public health authorities can access.

The two companies believe their approach addresses privacy concerns. People using the service will do so voluntarily, and no GPS location data or personal information will be recorded.

Image source,Getty Images

Turkey has imposed a two-day curfew in 31 of its largestcities as it attempts to stem the spread of the coronavirus.

The country’s interior minister said all residents in thosecities, including the capital Ankara and Istanbul, will be required to stay at home from midnighton Friday.

Warm and sunny weather has been forecast for much of thecountry over the weekend, prompting concern social-distancing rules may beflouted.

Turkey’s coronavirus death toll jumped by 98 on Friday, with the total now at 1,006.

Its total number of confirmed cases is now 47,029, a rise of4,747 in 24 hours.

Image source,EPA

Aid agencies have expressed alarm after the first virus case was confirmed in Yemen, where years of civil war have devastated health systems.

Oxfam said it was a “devastating blow”, while the International Rescue Committee called it a “nightmare scenario”.

Yemen is suffering the world's worst humanitarian crisis and millions are reliant on food aid.

Diseases including cholera, dengue and malaria are rife and only half of hospitals are fully functional.

Today's press conference from President Donald Trump and the White House coronavirus task force has finished.

Here's what was said:

• President Trump believes the US will see fewer than 100,000 deaths, adding that original estimates suggested that 2.2 million could have died in a worst-case scenario. He praised Americans, saying "nobody thought the American people could be so disciplined"
• He said more than 2m coronavirus tests have been completed, with around 100,000 happening each day. He said the US was "leading the world" in testing
• Deborah Birx, who is part of the coronavirus task force, said the US "has not reached the peak" despite hospitalisations declining in New York
• Dr Jerome Adams, the US Surgeon General, said coronavirus has disproportionately affected people of colour. He said that "black boys are three times as likely to die of asthma" as white children, and took the inhaler from his pocket to show he still considers it a risk
• Trump said some states "do not need testing", giving Iowa as an example, because their populations are widely dispersed across large areas
• Trump wants to reopen the US as soon as possible, but accepts that "the facts will determine" when it happens
• Earlier he praised people working on the front lines, specifically those who work in grocery stores, saying he wanted to "thank them and shout out to them"
• Asked about churches being open, Vice-President Mike Pence said he thought all places of worship should "heed the guidelines issued" and added: "Jesus says where two or more are gathered, there he is also, you can worship... and you'll be serving the nation"
• Trump spoke about coronavirus as “a brilliant enemy”, calling it “genius” and adding it was “hidden, but very smart”

Image source,Channel 4 Publicity

Fans of Friends will have to wait a little longer for the highly anticipated reunion episode as it has been postponed due to the impact of coronavirus on TV production.

The show had been due to launch with the HBO Max streaming service in May, but filming has not been able to take place.

It is not yet clear when the episode will be filmed. Rumours of a reunion were confirmed by the cast in February.

Friends aired from 1994 until 2004. The final show was watched by 52.5 million viewers in the US, making it the most watched TV episode of the 2000s.

Image source,Getty Images

US President Donald Trump said UK Prime Minister Boris Johnson's approval rating "must be about 300%".

Johnson tested positive for coronavirus on 27 March and has been in hospital since Sunday, including four days in intensive care.

He had been leading the UK's response to the coronavirus but some have criticised his handling of the crisis.

Trump said he had called Johnson's "group" to wish him well but had not spoken to the Prime Minister.

"His approval rating must be about 300%," Trump added.

"He is a great guy.

"He was a great guy before and people see what he has been through. What he has been through has been incredible."

Nick Thorpe, BBC News

Image source,Getty Images

The situation in Romania's hospitals is under control despite localised problems caused by the spread of coronavirus, a government official has told the BBC.

The country has struggled to contain the spread of the virus, not helped by the return of 250,000 Romanians from jobs elsewhere in Europe during March.

Almost 5,500 people have tested positive, 257 have died, and a similar number of new infections were reported in the last 24 hours.

In the north-eastern city of Suceava, the hospital became the centre of contagion, with 182 medical staff infected.

Elsewhere in the western city of Timisoara, 10 newborn babies tested positive for the virus, despite none of their mothers having the disease. Of those babies, seven have since tested negative.

A criminal investigation has been launched, the director of the public health authority fired, and the hospital re-organised.

Romanian government spokesman Andi Munciu told the BBC such cases were not a reflection of the "generalised situation" in the country.

Social media companies are struggling to contain a wave of coronavirus misinformation. Into the breach have stepped volunteers who are fighting to stop rumours, bad advice and conspiracy theories from going viral.

Rachael Hogg is currently juggling her busy job as a project manager and teaching her nine-year-old from her home in the market town of Morpeth, about 15 miles north of Newcastle.

But if that wasn't enough, each day she's also deleting as many as 50 misleading posts about coronavirus from the local Facebook group she runs.

President Trump said he wants to reopen the country "as soon as possible" but "facts will determine" when he does so.

Current restrictions in the US are set to end on 30 April.

Asked if he was overly determined to reopening the country on that date, Trump said: "I would love to open, I've not determined anything. The facts will determine what I do."

He said he will announce a new council on Tuesday, made up of doctors and businessmen tasked with discussing when the country could reopen.

Trump named the council the "opening our country council".

"We are going to have great business leaders and doctors," he said.

"We will be announcing names on Tuesday and that will play a role [in deciding when the country can reopen].

"I want to get open as soon as possible. This country is meant to be open and vibrant."

Image source,Getty Images

Italian Prime Minister Giuseppe Conte has extended Italy’s nationwide lockdown until 3 May.

The first nationwide lockdown was imposed on 9 March until 3 April but was later extended to 13 April.

The tight lockdown in Italy appears to be working. Its latest 24-hour death toll is 570, continuing a declining trend.

But Italy still has the world's highest overall death toll, which currently stands at 18,849.

Image source,Getty Images

Liverpool and Scotland football legend Sir Kenny Dalglish has tested positive for coronavirus and is in hospital but showing no symptoms.

The 69-year-old was admitted to hospital on Wednesday for treatment of an infection and tested positive for Covid-19 after a routine test.

His family said in a statement "he looks forward to being home soon".

Dalglish played over 500 games for Liverpool and also managed the club on two occasions. He also won more than 100 caps for Scotland.

Image source,AFP

Many Christians in Africa usuallyattend services on Good Friday, but this Easter, like elsewhere in the world,most churches were closed to prevent the spread of coronavirus.

As several countries on thecontinent extend restrictions, these are the main developments: