France and Spain have imposed lockdowns, Australia has ordered self-isolation of arriving foreigners, and Argentina and El Salvador have extended entry bans as the world seeks to contain the coronavirus.
Panic buying in Australia, the US and Britain prompted leaders to appeal for calm over the virus that has infected over 150,000 people globally and killed more than 5,600.
Several countries imposed bans on mass gathering, shuttered sporting, cultural and religious events, while medical experts urged people to practice "social distancing" to curb the spread.
The coronavirus has also taken a toll on church services, with the Vatican saying all papal Easter services will be held without the faithful attending and general audiences and Sunday blessings will be held via internet and TV until April 12.
Australian Prime Minister Scott Morrison said from midnight Sunday international travellers arriving in the country would need to isolate themselves for 14 days, and foreign cruise ships would be banned for 30 days, given a rise in imported cases.
Australia's latest restrictions mirror those announced by neighbouring New Zealand on Saturday. Australia has recorded more than 250 coronavirus cases and three deaths.
US President Donald Trump declared a national emergency on Friday. The United States has recorded more than 2000 cases and 50 deaths, but has been criticised for slow testing.
Travel bans and a plunge in global air travel saw further airline cut backs, with American Airlines Inc planning to cut 75 per cent of international flights through May 6 and ground nearly all its widebody fleet.
The dramatic announcement by the largest US airline came hours after the White House said the US would widen new travel restrictions on Europeans to include travellers in the UK and Ireland.
Washington has already imposed flight restrictions on China.
China tightened checks on international travellers arriving at Beijing airport on Sunday, after the number of imported new coronavirus infections surpassed locally transmitted cases for a second day in a row.
Spain put its 47 million inhabitants under partial lockdown on Saturday as part of a 15-day state of emergency to combat the epidemic in Europe's second worst-affected country after Italy.
Effective immediately, all Spaniards must stay home except to buy food, medicines, go to work or to the hospital or for emergencies. Spain had 193 coronavirus deaths and 6250 cases, up from 120 deaths reported on Friday.
France will shut shops, restaurants and entertainment facilities from Sunday with its 67 million people told to stay home after confirmed infections doubled in 72 hours.
French Prime Minister Edouard Philippe said the government had no other option after the public health authority said 91 people had died in France and almost 4500 were now infected.
Argentina banned entry to non-residents who have travelled to a country highly affected by coronavirus in the last 14 days, the government announced on Saturday.
Argentina has 45 cases of coronavirus, the health ministry said, up from 21 on March 12.
Panama said flights arriving from Europe and Asia would be temporarily suspended.
Colombia will expel four Europeans for violating compulsory quarantine protocols, just hours after it closed its border with Venezuela, the government said on Saturday.
Israel will use anti-terrorism tracking technology and partially shut down its economy to minimise transmission risks, Prime Minister Benjamin Netanyahu said on Saturday.
Cyber tech monitoring would be deployed to locate people who have been in contact with those carrying the virus, subject to cabinet approval, Netanyahu said.
South Korea began to subject visitors from France, Germany, Britain, Spain and the Netherlands to stricter border checks, after imposing similar rules for China, Italy and Iran suffering a major outbreak.
Visitors from those countries now need to download an app the South Korean government rolled out to report whether they have any symptoms related to the virus everyday.