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.
Israel pounded Lebanon with more than 120 air strikes on Tuesday in one of the heaviest days of bombing in weeks, Lebanese security sources said, as Israeli Prime Minister Benjamin Netanyahu said his military was deepening its operations in the country.
Syria's transitional leadership has located remnants of former President Bashar al-Assad's clandestine chemical weapons programme, including raw materials and munitions similar to those used to carry out deadly gas attacks during the country's long-running civil war.
US President Donald Trump, who turns 80 next month, said "everything checked out perfectly" after having his physical on Tuesday at Walter Reed National Military Medical ​Center, following a year of public attention on apparently minor health issues.
US Secretary of State Marco Rubio said on Tuesday negotiating a deal with Iran could "take a few days," quashing hopes for an imminent end to the conflict a day after US forces conducted what Washington called defensive strikes in southern Iran.