The United States will broaden its European coronavirus travel ban, adding the United Kingdom and Ireland to the list.
The ban will come into play midnight Monday, Vice-President Mike Pence announced.
"The president has made a decision to suspend all travel to the UK and Ireland," he said. "Americans in the UK and Ireland can come home. Legal residents can come home . . . they will be funnelled through specific airports and process."
Meanwhile, President Donald Trump, who has tested negative for COVID-19, hinted he was considering domestic travel restrictions "specifically from certain areas".
"If you don’t have to travel, I wouldn’t do it," he told reporters.
In the UK, the total number of deaths has touched 21, with 1,140 infections.
Pakistan's army said on Tuesday that more than 50 people were killed in last week's military clashes with India which ended in a US-mediated ceasefire.
Half a million people in the Gaza Strip face starvation, a global hunger monitor said on Monday, saying the Israeli-blockaded enclave still confronts a critical risk of famine with a high risk of one occurring by the end of September.
An Israeli-American hostage crossed into Israel on Monday after his release by Hamas as fighting paused in Gaza, the Israeli military said, but there was no deal on a wider truce or hostage release as monitors warned of famine in the devastated enclave.
The military operations chiefs of India and Pakistan spoke by phone on Monday, the Indian army said, following a ceasefire that paused days of intense fighting last week.