The 100-year-old has been an inspiration since launching is fundraising challenge
Charity champion Captain Sir Tom Moore has been taken to hospital with coronavirus.
The 100-year-old, who raised almost £33m for NHS charities, was taken to Bedford Hospital after requiring help with his breathing, his daughter Hannah Ingram-Moore said on social media this weekend.
She said he had been treated for pneumonia over the past few weeks and last week tested positive for Covid-19.
Ingram-Moore said her father was not in intensive care.
A spokeswoman for the family said Capt Sir Tom had not yet received the Covid-19 vaccine due to the medication he was on for pneumonia.
The Army veteran, originally from Keighley in West Yorkshire, came to prominence by walking 100 laps of his garden in Marston Moretaine, Bedfordshire, before his 100th birthday during the first national lockdown.
Capt Sir Tom, who was given the honorary title of colonel on his 100th birthday, had initially set out to raise £1,000 for NHS charities by repeatedly walking an 82ft (25m) loop of his garden.