Flu or Covid
It can take years of testing and research to produce a safe vaccine, but in 2020 scientists around the world are racing to have a COVID-19 vaccine by next year. According to New York Times’ vaccine tracker, there are currently 87 confirmed preclinical vaccines and 50 vaccines in clinical trials as of October 29, 2020. The development of a vaccine from lab to clinic includes preclinical testing (testing on animals), Phase 1 safety trials (small number of people), Phase 2 expan