The city health department is launching a new campaign to inform New Yorkers about the risks of the Zika Virus.
It comes as the department says 32 babies in the city tested positive for Zika, half of whom have neurological disorders as a result of the virus.
All of those cases are related to travel.
"Every single case of Zika identified in New York City was associated with travel. There is no local transmission," said City Health Commissioner Dr. Mary Bassett.
Now, health officials are urging any pregnant women or those planning to get pregnant, to avoid travel to Zika-active countries - many of which are in the Caribbean or South America. They also advise against going to the Miami area.
"I think all of us want the chance of a baby having a serious neurological disorder to be zero. That is the risk level I hope most pregnant women will be seeking, and they can achieve that zero risk if they don't travel to an area where there's transmission," said Bassett.
Officials say more than a thousand New Yorkers have tested positive for Zika, with around 400 of them pregnant women.
For most, Zika results in flu-like symptoms. But in pregnant women, their babies could be a risk of smaller head size, as well as developmental and neurological issues.
One reason officials and doctors are facing difficulties getting the message across is that most people with the virus do not feel sick. Only one in five have symptoms.
And if they do have symptoms, they are mild: red eyes, fever, rash, joint pain.
The focus, however, is not just on women. Zika is sexually transmitted, and officials advise men to use condoms if they travel to affected areas.
"And to use condoms when they return for eight weeks," Bassett said. "We have condoms,"
So far this year, 70 New Yorkers have tested positive for Zika.