Greece, Switzerland, Croatia and Austria have all confirmed their first cases of coronavirus, as the number of infections continues to rise in Italy.
According to the authorities, all of the new cases – one in Greece, two in Austria, one in Croatia, one in Switzerland – had travelled to northern Italy.
Italy has been the worst affected, with the number of infections soaring to 322 and 11 deaths.
However, European nations have decided closing borders would be "disproportionate".
"We're talking about a virus that doesn't respect borders," said Italian Health Minister Roberto Speranza.
Meanwhile, a number of schools in England and Northern Ireland have been ordered to close after students returned from school ski trips in the virus-struck Lombardy region in Italy.
A second person infected with the coronavirus has died in France, with the health ministry adding that number of confirmed cases have totalled to 17.
The US House of Representatives rejected an effort on Thursday to stop President Donald Trump's air war on Iran and require that any hostilities against Iran be authorized by Congress, backing the Republican president's military campaign.
Foreign ministers from the Gulf Cooperation Council (GCC) and the European Union have strongly condemned the Iranian attacks targeting GCC states, calling them a direct threat to regional and global security.
US President Donald Trump claimed the right to join Iran in deciding its next leader as the war escalated, with US and Israeli jets hitting areas across the country and Gulf cities coming under renewed attack.
British Prime Minister Keir Starmer said on Thursday that four additional Typhoon fighter jets would be sent to Qatar amid the ongoing regional developments, insisting that the UK has the right plan for defence.