Cardiff Central MP Jo Stevens is being treated in hospital for coronavirus.
The MP's team confirmed the news on Saturday night.
Using her Twitter account, they said: "From #TeamJoStevens - Jo has asked us to let you know that she is being treated in hospital for Covid. Thanks for all your good wishes we will give an update when we can."
On New Year's Eve, the Labour shadow cabinet minister's staff revealed that the 54-year-old had been suffering with Covid-19 "for a while".
They said: "From #TeamJoStevens - Jo has been laid low with COVID for a while so on behalf of us and Jo, Happy New Year to everyone across #CardiffCentral. Here’s to a healthier and better 2021. Tonight we’ll be thinking of all those who have lost loved ones to this awful virus."
On Saturday night, MPs including Wayne David and Alex Davies-Jones sent Ms Stevens their best wishes.
First Minister Mark Drakeford said: "All of our thoughts and best wishes are with Jo for a speedy recovery. Thank you to Jo’s constituency team for continuing to support Cardiff Central constituents at this difficult time. Brysiwch wella Jo!"
Anna McMorrin, MP for Cardiff North, said: "Sending lots of love for a speedy and strong recovery Jo."
Labour leader Keir Starmer said: "Get well soon Jo, a dear friend and colleague."
