The vaccine doesn't kill you in the cases where it doesn't work.
If you are in the group with 0.5% chance of death without the vaccine, then with a 95% effective vaccine, you would have a 95% chance of being immune (0% chance of dying from the virus) and 5% chance of having the normal 0.5% chance of dying.
The vaccine doesn't kill you in the cases where it doesn't work.
If you are in the group with 0.5% chance of death without the vaccine, then with a 95% effective vaccine, you would have a 95% chance of being immune (0% chance of dying from the virus) and 5% chance of having the normal 0.5% chance of dying.