Several European countries have announced their first coronavirus cases, all apparently linked to the growing outbreak in Italy.
Austria, Croatia, Greece and Switzerland said the cases involved people who had been to Italy, as did Algeria in Africa.
The first positive virus test has been recorded in Latin America - a Brazilian resident just returned from Italy.
Italy has in recent days become Europe's worst-affected country.
Authorities have confirmed more than 300 cases and 12 deaths there, the most recent a 70-year-old resident of Lombardy who died after being taken to intensive care in Parma. The country has also seen four children infected.
Its neighbours, however, have decided closing borders would be "disproportionate".
Health ministers from France, Germany, Italy and the EU Commission committed to keeping frontiers open at a meeting on Tuesday as new cases of the virus emerged throughout Europe and in central and southern Italy.
"We're talking about a virus that doesn't respect borders," said Italian Health Minister Roberto Speranza.
His German counterpart, Jens Spahn, said the neighbours were taking the situation "very, very seriously" but acknowledged "it could get worse before it gets better".