The World Health Organization setting up what it calls a global response unit amid concern about the spread of the Zika virus.
FOX's Simon Owen reports from the European bureau:
Doctor Anthony Costello at the World Health Organization saying most people who contract Zika won't get sick:
(Costello) "But the problem is that the complications of this relatively mild illness do have potentially devastating effects for families."
The virus suspected in a wave of birth defects in Brazil. Officials say four million people across the Americas could catch Zika this year.
Costello saying the first priority is urging women in affected areas:
(Costello) "To take every possible measure for personal protection against being bitten by mosquitoes."
He warns a vaccine is likely years away.
In London, Simon Owen, FOX News.