Covid-19 vaccine test volunteers are numerous in Florida, even though only half will get a real vaccine.

https://medicalxpress.com/news/2020-08-volunteers-flock-vaccine-trials-virus.html

Sample quote

So far, the United States has poured more than $10 billion into six vaccine development projects and signed contracts to guarantee delivery of hundreds of millions of doses.

"We have seen a lot of excitement with this trial," said RCA nurse practitioner Barbara Corral, who added that volunteers "really want to be part of something great."

End quote