According to projections by UK's top modelling agency the third wave of COVID-19 spike will hospitalize and kill 60 to 70% of those people who took both the vaccine doses. The paper suggests that the resurgence in both hospitalisations and deaths will dominated by those who have received two doses of the vaccine, comprising around 60% and 70% of the wave respectively.
The modelling (read below in full) was presented to the UK's top scientific advisory body Sage by one of its sub groups, ...