The UK has reported record coronavirus cases for the second day in a row - with 88,376 in the latest 24-hour period.
It comes after a high of 78,610 yesterday - which significantly beat the previous record of 68,053 from 8 January 2021.
This time last week there were 50,867 cases reported.
Experts have warned case records will likely be broken again in the coming weeks as the Omicron variant spreads rapidly.
There were 1,691 new cases of the variant reported yesterday, bringing the total to 11,708, the UK Health Security Agency (UKHSA) said.
However, the real number is believed to be much higher.
Another 146 deaths were also reported on Thursday, taking the total within 28 days of a positive test to 146,937.
Meanwhile, a record number of daily booster jabs were administered for a second day in a row, according to the NHS.
Another 745,183 booster or third jabs were carried out across the UK on Wednesday, bringing the total to 25,477,345 people.
The government is in the middle of an unprecedented national vaccination effort to offer boosters in a bid to increase protection against Omicron.
The UKHSA published data showing two doses are not enough to stop people becoming unwell from Omicron, but a booster prevents around 75% of people getting any symptoms.
Every person infected with Omicron is believed to be passing it to between three and five others on average, a senior government scientist has said.
Dr Susan Hopkins, the UKHSA chief medical adviser, told MPs on the health committee that for Omicron, the R value in the UK is between 3 and 5.
The number in hospital with COVID has remained relatively flat over the last few weeks - at around 7,500 - but that's expected to increase as the jump in infections leads to more people needing medical help.
England's chief medical officer has advised people to prioritise events that matter to them in the run-up to Christmas.
Professor Chris Whitty said the record for daily hospital admissions for COVID could be broken in the coming weeks, and urged people not to "mix with people you don't have to".
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