Wales now has more than 400 identified cases of the Omicron variant, according to latest figures from Public Health Wales.
On Monday the NHS trust confirmed that 163 more cases had been found to take the total to 435.
Cardiff and Vale University Health Board now has more than 100 cases, the most of any health board, followed by Cwm Taf Morgannwg UHB and Swansea Bay UHB.
Read more: Rules in England ‘may tighten' after Christmas as Omicron cases surge
Here is the breakdown of Omicron cases by health board area:
Health Board |
Total cases |
Cardiff and Vale University Health Board |
102 (+31) |
Betsi Cadwaladr University Health Board |
67 (+24) |
Cwm Taf Morgannwg University Health Board |
86 (+34) |
Aneurin Bevan University Health Board |
58 (+17) |
Swansea Bay University Health Board |
84 (+36) |
Hywel Dda University Health Board |
22 (+14) |
Powys Teaching Health Board |
16 (+7) |
Total |
435 (+163) |
Dr Meng Khaw, national director for health protection and screening services for Public Health Wales, said: "Public Health Wales is today (Monday, December 20) confirming 163 new cases of Omicron variant in Wales, bringing us to a total of 435 cases.
"As we have indicated previously, a rapid increase over the coming days and weeks is expected."
On Monday it was also confirmed that the seven-day infection rate had risen sharply, up from 501.3 cases per 100,000 population on Sunday to 548.4. You can read the full bulletin here.
Meanwhile Welsh Government ministers are due to meet on Monday to discuss whether further Covid restrictions are needed to curb the spread of the virus.
On Friday, it was confirmed that new restrictions would be brought in from Monday, December 27. From then on nightclubs across the country will have to close, while extra safety measures will be put in place across other industries.
A two-metre social distancing rule will be brought into effect in offices and one-way systems and physical barriers will return.
But the First Minister hasn't ruled out bringing in further restrictions for the hospitality industry and sporting events.
Asked about plans around sporting events with large crowds on Friday, Mr Drakeford said: "We'll make some announcements about that on Monday.
"Our Cabinet decided yesterday we needed some extra information about the way that the Omicron variant operates in the outdoors.
"We'll talk to the organisers of those big rugby derbies, the Welsh Grand National, football matches that are planned and then we'll come to some decisions on Monday as to how they can best go ahead."
The aim is for all eligible adults to be offered a booster dose of the Covid vaccine dose by the end of December. To date the total stands at 1,311,804.
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