The mortality rate was 23.6 per 100,000 for those who were fully vaccinated, compared with 356.5 per 100,000 for those who were unvaccinated during this period.
Adjusted for age, the statisticians found that taking two doses also reduced the risk by 81% over the same period.
This time period does not include the entire Omicron wave, which may affect the results of the study. The new variants have made the two doses significantly weaker, but Omicron itself is much milder than previous strains.
In the ONS report, people are classified based on how many shots they received and whether it has been more or less 21 days since their last.
The risk of death has been consistently lower each month since September for those who received a booster shot since the third dose began.
More than 37.4 million people in the UK have now received a Covid booster, with 80 per cent of those over 18 who are eligible to go on to get a third dose.
ONS statisticians looked at all of the more than 69,000 people aged 10 and over who died with Covid in the UK last year to calculate their risk of death based on the number of doses they took.
The most vulnerable over-90s had an 89% reduction in risk after booster shots, with mortality falling from 3,237.1 per 100,000 in the unvaccinated to 343.2 per 100,000 in the vaccinated. three noses.
For much of 2021, the mortality rate for one Covid-related death for those who received two doses of the vaccine remains much lower than the equivalent figure for those who were not vaccinated, the ONS said. found that.
However, rates among those who had intercourse accidents began to increase late last year, from 92.0 deaths per 100,000 in October to 221.1 in November and 367.7 in December.
This could be driven by a change in the composition of the dual injection group, with most older adults already receiving a booster or third dose at this point, the ONS said.
It may also be related to “weakened protection from prior vaccination,” the report said.
They found a rate of 462 per 100,000 among unvaccinated people in December when Omicron caused a nationwide spike in cases.
But in those who had had a booster shot at least 21 days earlier, the rate dropped 94 percent to just 24.5 per 100,000.
For comparison, the rate was 377.7 per 100,000 (less than 18 per cent) in people who had suffered just one stab.
And the number was 367.7 per 100,000 (less than 20%) in people with two stabs.
The rate was nearly six times higher in the two-person group than their six-month mortality rate from July to December, which was 67.2 per 100,000.
Experts warn the slightly higher dose of Omicron’s vaccine and the weakened immunity from the second dose will lead to more deaths if people don’t receive the booster by that time.