Zika virus has been spreading quickly in parts of South America and the Caribbean.
In the United States, there have been over 1,500 confirmed cases of Zika, and more than 1,600 suspected cases, the first confirmed case of the virus in the United Sates.
But, so far, there are no confirmed cases in Puerto Rico, the US Virgin Islands, or U.S. territories.
The National Weather Service in Florida, the nation’s third-largest and fifth-largest city, says the number of people infected with the Zika infection is at its highest level in decades.
The city of Miami, Florida, is now experiencing a rash of cases of the mosquito-borne virus.
The Miami Herald reports the number one city in the US with the highest rate of new cases of this Zika virus is also the one with the lowest percentage of residents who have tested positive for it.
In Puerto Rico and the US territories, residents are under strict quarantine, with a total of 1,822 people having tested positive.
The CDC says the virus is spread via bites and sexual contact, but there is no clear evidence to support that claim.
People in Florida have reported the virus to the state health department, but have been turned away at airports and on flights because they have not been vaccinated.
There are no specific symptoms of Zika or to what extent they may affect people.
But people should avoid mosquito bites and avoid close contact with people who have traveled to areas affected by the outbreak, the CDC says.