The CDC continues to add destinations to areas where the mosquito-borne Zika virus transmission is ongoing. The two latest are the U.S. Virgin Islands and the Dominican Republic. The CDC has issued a travel advisory to women who are pregnant—in any trimester—to postpone travel to the 21 countries and territories in the Americas as a precaution against becoming infected while traveling. The Zika virus, which is transmitted through mosquito bites, has been linked to brain damage in infants. Babies have been born with a birth defect called microcephaly that can result in small heads and abnormal brain development.
The CDC has additional information on affected areas.