The Zika Virus is now spreading in a number of countries primarily in the Caribbean, Central and South America.
The Zika virus contains 10 proteins, but only two, known as NS4A and NS4B, may handicap fetal brain formation, according to the study published Thursday in the US journal Cell Stem Cell.
"The threat of Zika to future generations of Puerto Ricans is evident, and I feel a responsibility to do everything that is within my reach to make sure we fight the spread of the virus", he said in a statement.
The continuing Zika outbreak was first detected past year in Brazil, where it has been linked to more than 1,700 cases of the microcephaly, and has since spread rapidly through the Americas. The Caribbean island and USA territory has reported 10,690 laboratory-confirmed cases of Zika, including 1,035 pregnant women.
In the continental United States, Florida is the first state to report local transmission.
On Thursday, Ms. Burwell said that the shifting of funds was a last-ditch effort. "Nevertheless, we are trying to develop a cure for that percentage that does get Zika-related microcephaly".
"It was only a matter of time before a Canadian was affected in this way from Zika", he said. The county is spraying pesticides throughout the 1-square-mile area.
Congress is out of session until after Labor Day but many lawmakers are calling on Republican leaders to convene a special session to pass an emergency Zika bill. The Senate passed a $1.1 billion deal in June, but the House's approval of its own $1.1 billion in funding was filibustered by Democrats, who argued that they were left out of negotiations on the bill, and that the measure would take funds away from other health programs and bar any availability of funds for birth control.
Ms. Burwell estimated Thursday that the funds that the CDC, NIH and BARDA have been using to combat Zika "will be virtually exhausted by the end of the fiscal year" on September 30. The infection is similar to other infections for which there are vaccines, so that could help speed the development of a Zika vaccine.
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.