That would be the same as 2, in terms of risk from the body reacting negatively to the viral proteins.
and possibly infect scores of other people, some of them not so lucky and will get the serious case requiring hospitalisation or worse.
It’s not clear if the vaccine will prevent infectiousness yet, unfortunately, so for now it’s best to assume even vaccinated people can spread the virus until more is known. Both ways will increase herd immunity.