It's worth thinking about how many more people will die without the vaccine as well. The RotaSheild vaccine had major side effects 1 or 2 out of 10000 people, that's better than the current estimate death rate of COVID-19.
1,769 people 25-34 have died of Covid this year. There are 23m people in that age range. .0077% have died. If the vaccine had an adverse effect at a similar rate as covid has killed young people, we'd expect it should have showed in the trials in 1-3 people.