There's a new practice called Human- Challenge study or controlled human infection study, which shortens the Covid-19 vaccine study by several months, by having a challenge trail.
How the challenge trail is intended to work is to expose 100 people to the virus after a experimental virus is administered.
Although this is a high reward, it is also extremely risky. With the pathogen being unpredictable and deadly, with disease ranging to more than 82,000 deaths in America and over 291,000 world wide since it first appeared in in China many say a risker than normal study is justified.
Are you willing to test out trial and error Vaccines for Covid-19? I bet I know what my conspiracy theorist are thinking, but I rather you tell me.