U.S. health officials on Friday issued a travel warning for 14 countries and territories in the Caribbean and Latin America where infection with Zika, a mosquito-borne virus, is a risk.

The U.S. Centers for Disease Control and Prevention in particular cautioned pregnant women not to travel to those areas as Zika has been linked to a serious birth defects.

The travel alert applies to Brazil, Colombia, El Salvador, French Guiana, Guatemala, Haiti, Honduras, Martinique, Mexico, Panama, Paraguay, Suriname, Venezuela, and the U.S. Commonwealth of Puerto Rico.

It also includes advice that women who are trying to become pregnant should consult with their doctor before traveling to those areas.

(Reporting by Deena Beasley; Editing by Sandra Maler)