Zika virus case reported in Puerto Rico
The CDC and Puerto Rico Department of Health are working closely to determine how the patient -- who has no known travel history -- acquired the virus, which is transmitted through bites by the Aedes species of mosquito.
Symptoms of the virus, which has no known cure, include rash, fever, joint paint and conjunctivitis. The virus rarely results in death.
Outbreaks of the virus have occurred in Africa, Southeast Asia and the Pacific Islands, as well as several countries in the Americas.
Travelers to these regions are advised to avoid areas dense with mosquitoes. The CDC also recommends travelers take measures to prevent mosquito bites. Such measures include wearing clothing that covers exposed skin, placing mosquito-proof netting over windows and other open areas and dwellings and staying away from areas with standing water, which breeds mosquitoes.