You have to also consider the effects of isolation and lockdown as well especially on the elderly. Obviously risk of death is worse with a bad vaccine but with

You have to also consider the effects of isolation and lockdown as well especially on the elderly. Obviously risk of death is worse with a bad vaccine but with more people taking the AZ vaccine we'll soon know if its effective and if it is, they will be able to leave their home sooner than waiting out for another vaccine.