Heather Lieberman is betting that she will gain immunity from the coronavirus. Sandra Rodriguez wants to work with scientists for the good of the community.

According to AFP, both have signed up for clinical trials of Covid-19 vaccines in Florida, the new US epicentre of the global health crisis.

“I want to be part of history. I want to help,” said Rodriguez, a 63-year-old teacher sitting in the offices of a clinical investigation center north of Miami, as nurses prepare to inject her.

So-called phase three vaccine clinical trials — in which thousands of people take part in the final stages — are gaining traction in the Sunshine State.