Vaccines, treatments and hygiene solutions are available to help prevent the spread of the virus, which can cause swelling of the lungs and blood vessels, and sometimes respiratory failure.

At this time, the U.S. Centers for Disease Control and Prevention and World Health Organization do not recommend that pregnant women avoid travel to affected areas, said Dr. Lori Liebman, an associate professor at the Emory University School of Medicine.

“In pregnancy, any kind of respiratory symptoms are almost certainly not going to be infectious,” she said. “So if you’re traveling and you have any symptoms — if you have one cough or you have a fever — you have nothing to worry about from this virus.”

What happens if you catch the virus

If you have symptoms after returning from a trip to an affected area, be sure to call your health care provider right away, Ms. Liebman said. She recommended seeking care if you are suffering from respiratory symptoms, including a fever, but not from other potential symptoms such as diarrhea or eye infections.

Once you have spoken with your provider, “make sure you do it really quickly,” Ms. Liebman said.

“You can have respiratory symptoms for three to five days after you get back from a trip,” she said. “They get better over time.”