The United States said it was prohibiting most non-US citizens from traveling to the country if they had been in Brazil in the last two weeks, two days after the South American nation became the world No 2 hot spot for coronavirus cases.
South Africa's President Cyril Ramaphosa has said a controversial ban on the sale of alcohol would be lifted for home consumption when the country moves into level three of a five-tier coronavirus lockdown next month.
Chile's healthcare system is under strain and "very close to the limit," President Sebastian Pinera has said, as the number of confirmed novel coronavirus infections approaches 70,000 after a rapid increase in recent days.
Chief Executive of the Health Service Executive Paul Reid has said one-metre social distancing would give the health service greater capacity, but it will be guided by the National Public Health Emergency Team's advice.
The Chinese virology institute in the city where Covid-19 first emerged has three live strains of bat coronavirus on-site, but none match the new contagion wreaking chaos across the world, its director has said.
British Prime Minister Boris Johnson has backed his senior adviser Dominic Cummings, despite calls from within his own Conservative Party for the aide to resign for travelling 400km during the country's Covid-19 lockdown.
Hong Kong police fired teargas and water cannon to disperse thousands protesting against a plan to directly impose national security laws on the city, signalling a return to mass protests that hit the financial hub last year.