Governor Andrew Cuomo has declared a state of emergency in New York state after the number of coronavirus cases almost doubled in 24 hours.
Mr Cuomo said the number of confirmed coronavirus cases had risen from 44 to 76 in the state, with 11 in New York City.
Speaking at a news conference on Saturday, the governor said health authorities had been "aggressively testing" for coronavirus cases in recent days.
New York authorities have placed dozens of people under mandatory quarantine as a precaution.
"There's no doubt that massive quarantine is the best way to slow the spread," Mr Cuomo said.
Italy says the death toll from the coronavirus outbreak has risen by 36, bringing the total to 233 in the country.
Italy has recorded the most deaths of any country outside China, where the virus originated in the city of Wuhan.
The number of new coronavirus cases also increased markedly in Italy, from 4,636 to 5,883, authorities said.
The new figures were announced by Angelo Borrelli, the head of Italy's Civil Protection Agency, at a news conference on Saturday.
Of those originally infected by the virus, 589 had fully recovered while 567 were being treated in intensive care, Mr Borrelli said.
The outbreak started in Italy's northern regions a few weeks ago, but has spread to other parts of the country.
Thirteen US citizens thought to have been exposed to coronavirus are in quarantine in a hotel near Bethlehem.
The church group, who were on a trip to the Holy Land, are working with US and Palestinian authorities to try to get home.
"It was going to be the trip of a lifetime," Chris Bell, lead pastor of the 3Circle Church in Fairhope, Alabama, told Reuters.
He is there with his wife, Nan, while his three children are being cared for in the US by friends and family.
The group is awaiting test results, he said, and no-one had left their hotel floor.
Palestinian security forces wearing gloves and masks are stationed around the hotel in Beit Jala.
Palestinian authorities in the Israeli-occupied West Bank declared a state of emergency after seven cases were confirmed in Bethlehem on Thursday.
Hand sanitisers have been appearing at major sports events in the UK, including at Twickenham on Saturday for the Six Nations game.
Next week they will be in horse racing action at Cheltenham for the jump season's most important week.
Big events have not been closed to the public in the UK so far - as some have in Italy.
A US Navy sailor stationed in Italy is the first US service member in Europe to test positive for coronavirus, the US military command has said.
The sailor is currently "restricted to their residence" and receiving medical care in the southern Italian city of Naples, a statement said.
Military health professionals are carrying out a contact investigation to see whether any other staff were also carrying coronavirus, it said.
Last month, US Forces Korea said a 23-year-old soldier based in South Korea had tested positive.
- A hotel used as a coronavirus quarantine building in the Chinese city of Quanzhou has collapsed, trapping dozens of people. A search and rescue operation is ongoing. The cause of the collapse, which happened on Saturday night, is not yet known
- The UK has reported a rise of 43 coronavirus cases, bringing the total number to 206. More than 21,000 people had been tested for the virus in the UK as of Saturday, health authorities said. The UK remained in the "containment" phase of the outbreak, England's deputy chief medical officer said
- Iran has confirmed almost 6,000 coronavirus infections and 145 deaths. A second MP was reportedly among those to have died in the country
- Thousands of people remain quarantined on a cruise ship off the coast of California, near San Francisco. Some 21 people on board the ship tested positive for the virus. All 3,500 people on board are expected to undergo another round of tests at a non-commercial port
- Nicola Zingaretti, leader of Italy's centre-left Democratic Party (PD), said on Saturday he had tested positive for the coronavirus but he is OK.
- Copyright: AFP
Police in Cyprus have fired tear gas as people gathered to protest against the closure of crossings on the divided island's ceasefire line over fears of the spread of coronavirus.
Cypriot authorities had closed four of the eight checkpoints on the line last Saturday but activists for the group Unite Cyprus are demanding they be reopened.
Police said officers made "limited use" of personal tear gas spray to control the crowds gathered on either side of the Ledra Street crossing in Nicosia.
Cyprus is effectively partitioned, with the northern third run by a Turkish Cypriot government and the southern two-thirds by an internationally recognised government led by Greek Cypriots.Copyright: AFP
The Xinjia hotel in the Chinese city of Quanzhou has been reduced to rubble.
The five-storey, 80-room hotel, which was being used as a quarantine facility monitoring people who had had close contact with coronavirus patients, collapsed on Saturday night, trapping at least 70 people.
Combing through the debris, rescuers are still trying to recover people who were in the building when it fell.
Dramatic pictures show rescuers pulling people from the remains of the hotel, carrying some on stretchers and helping others down ladders. At least 32 people have been pulled out so far, authorities say.
Other images show the extent of the hotel's collapse. Its cause is not yet known.
Read the full story: Dozens trapped as China quarantine hotel collapses
Two patients have tested positive for coronavirus in the Maldives - the first cases in the south Asian country, its health ministry says.
Local reports say the pair are employees of four-star hotel, the Kuredi Island Resort.
The government has been taking precautions to try to prevent the spread of the virus, including a temporary ban on all cruise ships entering and docking in the Maldives.
Earlier (see our post from 14:27), we told you about the ban on pre-match handshakes at Premier League matches.
In the spirit of fair play, players resorted to fist-bumps instead.
Here are some pictures of the fist-bumps in action.
But not everyone adhered to the handshake prohibition.
Liverpool manager Jurgen Klopp was pictured shaking hands with referee Paul Tierney after the match. The BBC Sport live blog reported that some players were shaking hands after the final whistle too.
UK health authorities will not be pleased.
Here's a rare bit of good news with regard to the outbreak in Iran, one of the worst outside China.
The World Health Organization's representative there, Dr Christoph Hamelmann, says it has seen tremendous progress at hospitals across the country in recent days.
He said Iran had made facilities available in every province for the treatment of patients with Covid-19.
Speaking in the capital, Tehran, he also said he expected international sanctions affecting the health sector would not be fully implemented while the outbreak continued.
Iran has confirmed almost 6,000 coronavirus infections and 145 deaths but experts fear the official numbers may be underestimated.
Several politicians and senior officials have been affected and a second member of parliament is now reported to have died.
The Israel Defense Forces (IDF) have quarantined some 1,262 soldiers over suspicions they may have contracted the coronavirus, reports say.
The IDF said on Friday that most of the soldiers currently in quarantine had recently returned from holiday abroad, the Jerusalem Post reported.
Some, however, had come into contact with people confirmed to have the virus, the IDF said.
The IDF said 189 soldiers had already completed a 14-day period of mandatory self-quarantine.
Only one Israeli soldier has tested positive so far. That soldier is one of 21 confirmed cases of people with the virus in Israel.
In a move to stem the spread of the virus, IDF troops have been forbidden from visiting countries with outbreaks. Recent Israeli military drills have been cancelled too.
If you're planning a trip to Russia - or more specifically, the country's capital - you should probably be aware of this, from our political correspondent Jonathan Blake:
The UK government is warning people travelling to Moscow that they may be asked to self-isolate for 14 days on arrival, due to the coronavirus outbreak.
Updated travel advice says there are reports in Russia, citing official sources, that the UK will be added to a list of countries which already includes China, South Korea, Italy, Iran, France, Germany and Spain - for which special measures apply.
The advice also states that passengers may be asked to sign a document agreeing to self-isolate. It says that in "a small number of cases" foreign visitors have been placed in enforced quarantine if they do not comply.
- Copyright: PA Media
A British couple who caught the virus on board the Diamond Princess cruise ship are still unable to return to the UK.
The Diamond Princess, you might recall, was put under quarantine in Japan for two weeks in February due to an outbreak onboard. Hundreds of people on the ship caught the virus during the quarantine period.
David and Sally Abel began filming a YouTube video diary of their experiences when they were stuck on the ship and have continued since they were sent to hospital.
Mr Abel said his wife's latest test had come back negative but his was positive.
"Sally is now totally all clear, good to return to the UK. But she won't because I have had a positive," he said in the couple's latest vlog.
"I have now got to go back to square one. I have another test on Monday that is more than likely going to be negative."
He said Sally was no longer in medical care but that authorities had "agreed to allow her to remain here so we can be company for one another".
- Copyright: Reuter
Pictures of Lu Huejin crying as she tried to get her 26-year-old daughter out of locked-down Hubei province for leukaemia treatment in neighbouring Jiangxi went viral.
"She needs to have her treatment. But they won't let us through," Ms Lu told two reporters who found her on a bridge of the Yangtze river.
"All I want to do is save her life."
The BBC has tracked down the family to find out what happened next.
The UK government says the number of cases in the country is now 206, an increase of 43.
Two patients who tested positive for Covid-19 have so far died in the UK. Both were elderly and had underlying health conditions.
The Department of Health said that as of 07:00 on Saturday morning, more than 21,000 people had been tested for the virus.
Earlier, England's deputy chief medical officer Jennie Harries told the BBC that the UK remained in the "containment" phase of controlling the virus.
We have some breaking news from China.
A hotel has collapsed in south-eastern Fujian province, trapping dozens of people under the rubble, state media has reported.
The Xinjia Hotel in the city of Quanzhou collapsed at around 19:30 local time (11:30 GMT) on Saturday.
According to the Global Times newspaper, the building was being used to hold people who had been in close contact with others confirmed to have the virus. They were under medical observation.
About 70 people were in the building when it collapsed and 32 have been rescued so far, says the newspaper, which belongs to the Chinese Communist Party.
It is not yet clear what caused the building to collapse.
- Copyright: PA Media
Expect plenty of fist-bumping on the pitch at football fixtures this weekend.
The Premier League and English Football League have agreed to ditch pre-match fair-play handshakes.
The teams will still line up as usual but the home team will walk past the away side without shaking hands.
Earlier this week the government asked the Premier League to "step up its contingency planning" for coronavirus in a letter sent to club bosses.
Playing fixtures behind closed doors is the main contingency plan being considered. At present, matches are going ahead as planned.
Scotland business & economy editor
Travel and leisure are proving particularly vulnerable to the economic impact of coronavirus.
Airlines are the most exposed sector. UK-based airline Flybe has collapsed, German flag-carrier Lufthansa plans to cut up to half its capacity, and Norwegian's share price drop 21%.
Meanwhile, oil price has also dropped by nearly 10%.
What can governments do about it? And what will emerge on the other side of all this?
The terrain that emerges, perhaps in months, could look very different, in the way we work, in the technologies that emerge, and in our expectations of what government can do to make life less precarious for millions of vital workers.