First Minister Mark Drakeford says restrictions will be strengthened to prevent the virus spreading in shops and workplaces which remain open during lockdown in Wales.
The Welsh Government held its formal three weekly review of lockdown measures on Thursday.
This morning it was revealed the alert level 4 lockdown in Wales - implemented on December 20 - will continue for three more weeks.
This means non-essential retail, hospitality venues, licensed premises and leisure facilities will remain closed.
The Welsh Government is also reviewing whether major supermarkets and retailers need to put additional measures in place to protect people in store that are still open like supermarkets.
Supermarkets are already required to close off non-essential sections to stores and shoppers have to wear face coverings. Stores have also invested in hand sanitisers and plastic screens to protect staff and shoppers.
Welsh Government has not confirmed the additional measures but retail sources say these are the steps that may be considered.
- Stronger regulations to help support the enforcement of the wearing of face masks in stores - although concerns are raised in the industry about retail staff being asked to enforce these.
- Lower limit on the number of shoppers allowed in a store at any time.
- Supermarkets advised to return to one-way systems in stores. These were common in the first lockdown but many stores later removed these.
- There may also be stronger rules or advice on protecting staff, both on the shop floor, in warehouses and food production sites.
Mr Drakeford said at today's briefing: "I want to see at least the same level of protection today as was visible in the early part of the pandemic.
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"Those who work and shop in supermarkets need to be confident that the numbers in those stores are carefully and consistently controlled and that all other measures are in place to keep us all safe."
Sara Jones, Head of the Welsh Retail Consortium, said: "Retailers continue to take coronavirus measures very seriously and consistently uphold high hygiene and safety standards.
"Firms have already invested hundreds of millions on safety measures including perspex screens, additional cleaning, and implementing social distancing.
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“We remind the public that it is vital they play their part: maintaining social distancing inside stores and outside; washing hands regularly; be considerate of fellow shoppers and staff members; and where possible, try to visit shops at quieter times.
“We will continue to work constructively and positively with the Welsh Government on Covid, and are open to discussing with them what further mitigation measures can be taken and the data and science underpinning their thinking."
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