An NHS health board has brought back the wearing of face masks in hospitals and care homes across north Wales due to a rise in coronavirus cases.
There are fears the virus could be surging again just a month after Welsh Government First Minister Mark Drakeford announced the end of all Covid restrictions in Wales.
Covid data for last week showed rates have remained steady in Wales, following a spike - but there was an increase in infections in other UK nations.
Betsi Cadwaladr University Health Board chiefs are concerned following an increase of the virus in the community and outbreaks on wards and have decided to take action, North Wales Live reports.
In a statement, a health board spokesman said: "Due to increased Covid-19 prevalence in our communities, increased number of Covid-19 ward outbreaks and the impact this is having on staff absence, we ask all staff, patients and visitors to support us by wearing face masks in all clinical areas in all health and care settings, unless exempt.
"This includes all areas where patients receive care such as hospital wards and in clinics.
"While it may no longer be law, wearing a mask will help protect vulnerable people.
"We thank you for your continued support and understanding."
It has also been confirmed lateral flow tests will continue to be available to residents in Wales who display Covid-19 symptoms until July 31.
The Welsh Government's health minister Eluned Morgan said it has come amid a "changing picture" when it comes to the virus.
She said: "As we have seen before, Covid can quickly change, I am announcing this extension in response to the changing picture and new variants of concern.
"I would also ask people to take protective measures to protect the more vulnerable in the community, wear masks in health and care settings, stay at home if you test positive, and take up the offer for the vaccine."
