Coronavirus Vaccine Tracker
By Carl Zimmer, Jonathan Corum and Sui-Lee WeeUpdated November 27, 2020
PHASE 1
PHASE 2
PHASE 3
LIMITED
APPROVED
38
17
13
6
0
Vaccines
testing safety
and dosage
Vaccines
in expanded
safety trials
Vaccines
in large-scale
efficacy tests
Vaccines
approved for early
or limited use
Vaccines
approved
for full use
Vaccines typically require years of research and testing before reaching the clinic, but scientists are racing to produce a safe and effective coronavirus vaccine by next year. Researchers are testing 55 vaccines in clinical trials on humans, and at least 87 preclinical vaccines are under active investigation in animals.