The most deaths in a third coronavirus wave will consist of people who have received two doses of the COVID-19 vaccine, British scientists are warning in a new doomsday report.

"The resurgence in both hospitalizations and deaths is dominated by those that have received two doses of the vaccine, comprising around 60% and 70% of the wave respectively," the study predicts.

To combat the spike in mortality, the scientists are calling for new vaccines in the medium-term as measures to extend the period of lockdown before new vaccines are deployed.

The pessimistic scenario modeled by scientists at the London School of Hygiene and Tropical Medicine (LSHTM) foresees deaths and hospital admissions on a scale similar to January 2021 — despite a high uptake of the experimental jab.