As new data continues to come out, doctors are learning more and more about COVID-19 vaccines.
Pfizer is still doing clinical trials and just released new data saying its two-dose vaccine remains 91 percent effective for at least six months.
"I think it's actually pretty good data," USF Public Health Epidemiologist Dr. Jill Roberts said.
Scientists agree Pfizer's data is impressive, but they say headlines about the vaccine's immunity can be misleading.
"It's easy for people to get caught up on the number six, but this is just the endpoint that we're at right now. Then we've got to go out further, and then we've got to do that with other vaccines," Roberts said.
