HHS made the declaration at the request of Puerto Rico Governor Alejandro García Padilla. Friday was not a good day for the lucrative travel and tourism industry.
It also allows Puerto Rico to temporarily reassign public health workers to assist in the Zika response. Airlines, hotels and Resorts are in crisis mode.
"We are well aware of the importance of determining if there are mosquitoes that have the ability to transmit the Zika virus in our community and are implementing steps to identify them if they are in our community", Monroe County Health Officer Kim Comerzan said.
Scott has authorized state health departments across Florida to provide assessments and testing for pregnant women who request it.
US Secretary of Health and Human Services Sylvia Burwell said in a statement: "This [Obama] administration is committed to meeting the Zika outbreak in Puerto Rico with the necessary urgency".
The mosquito-borne virus has infected 1,035 pregnant women, which is a concern to authorities because Zika has been tied to a severe birth defect known as microcephaly.
But experts fear the real number of infections may be higher.More news: West Ham seals £20.5m deal for Andre Ayew
Authorities are spraying some areas with insecticide and are removing stagnant water to eliminate mosquito-breeding sites. On top of the $589 million in left-over Ebola funding, this means Congress will have appropriated a total of $1.2 billion to prevent the spread of this virus.
On Friday, health officials informed on new cases of Zika, which were identified in the Miami area.
Rebecca Gilman said it is Canada's second case of maternal-to-fetal transmission of the virus, which has been linked to serious birth defects that include microcephaly, where babies are born with abnormally small heads and underdeveloped brains to mothers who were infected while pregnant. There also appears to be blindness associated with the virus and abnormal joint development.
As the push for people to protect themselves against the Zika virus continues, a Florida-based company that produces environmentally-friendly wellness products took to the streets Sunday to provide mosquito repellant to the homeless. The symptoms can feel like a summer flu, and the majority of people who get the disease don't experience any signs of it.
Zika does not now pose a risk to the public, according to the health district.