U.S. Airways Inc., the nation’s second-largest carrier, said it will stop flying passengers to Europe because of the Zika virus, one of the most serious and widespread threats to the region.

The company will begin canceling flights starting Sept. 1 in most of Europe, including in the United Kingdom and France.

In the U.K., flights to Ireland will also be halted as well as flights to the U to Ireland and to Germany.

U.N. Secretary-General Antonio Guterres also announced the start of an emergency meeting to review the potential impact of the pandemic, the first of its kind.

“The current situation is an emergency and a real crisis and we have to act quickly,” Guterre said at a news conference.

“We have to work together, we have no choice.”

The European Commission on Monday said it had notified U.P. that it would stop selling travel tickets to travelers from Brazil, Colombia and Venezuela in light of the virus.

The decision comes after a meeting of European Union executive leaders in Luxembourg.

UPDATES: Sept. 4, 6:50 a.m.

ET: Updated with U.B.C. data.

Sept. 6, 5:30 a.M. ET

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