The case is outside of Wynwood, where the other 14 cases were reported.
Antibodies from infected people were able to inhibit strains from both Asian and African lineages.
The stopgap funds will help track adverse outcomes in babies born to moms infected with Zika virus.
The CDC says pregnant women should avoid travel to a fairly small area north of downtown Miami.
"As we anticipated, Zika is now here," CDC Director Tom Frieden says.
A CDC official says 1,500 pregnant women in Puerto Rico might be infected and not know it.
It's called antibody-dependent enhancement (ADE), wherein the dengue vaccine sets up severe disease in those not previously exposed — and it might have repercussions for Zika.
In other developments, the Zika surge continues in Puerto Rico, more US travelers have been infected, and the virus has spread to more Caribbean locations.
The study sheds light on how Zika antibodies bind to the virus. Also, Florida is investigating four possible local cases now, all from the same two counties: Broward and neighboring Miami-Dade.
Also, as Florida officials continue their investigation into two possible locally acquired cases, they add 11 more travel-linked infections, including in pregnant women.
