Kate Garraway was replaced on Good Morning Britain this week and her absence has sparked concern.
The 53-year-old normally presents the show alongside Ben Shephard or Adil Ray as Piers Morgan and Susanna Reid take their summer break.
But instead, Adil was joined by Charlotte Hawkins, so viewers did not receive their normal update on Kate's husband, Derek Draper.
He has been in intensive care after a horrific coronavirus battle put him into a medically-induced coma.
Now in a barely-conscious state, Kate recently revealed his recovery was far slower than she had hoped.
And fans on Twitter raised their concerns for Kate's whereabouts.
One said: "Where is Kate Garraway?"
Another said: "Where is @kategarraway today ? Is everything OK???"
Kate said she was desperate for a "step forward", but had been warned by doctors to be thankful there were no major steps back.
Kate had asked healthcare professionals about donating her blood back in April, but was told at the time that they were "months away" from being confident enough to "clean blood".
Kate said: "The blood plasma treatment is too late to help Derek but the idea that we can spread things that are working on this show is wonderful.
"For me doing positive at that point and now is wonderful and something we can all do, those of us who have had the virus, to feel like we're helping.
"I am seeing Derek today and I will tell him about it but actually I know, I got a little ticking off from the team who have been helping him, because I haven't given them a mention.
"So good morning to you, thank you for everything you're doing and good morning to Derek as well.
