Captain Sir Thomas Moore, popularly known as Captain Tom, has been hospitalized with COVID-19.

The former British Army officer is known for his philanthropic work. He raised millions of dollars for charity in the run-up to his 100th birthday during the COVID pandemic.

The 100-year-old World War II veteran is in the hospital after getting diagnosed with COVID infection, according to his daughter Hannah Ingram-Moore.

She said in a statement, “Over the last few weeks he was being treated for pneumonia and last week tested positive for COVID-19.”

He had been staying at home as he was undergoing treatment, but on Sunday, he was hospitalized at Bedford Hospital after having breathing issues, according to Hannah.

“He is being treated in a ward” at the hospital, she said, explaining that her father is not in an intensive care unit, according to NPR.

Last year, Capt. Moore was awarded a knighthood after inspiring people in the U.K. and around the world.

Capt. Moore was knighted by Queen Elizabeth II last summer, after his modest fundraising plan became a sensation, offering a rare bit of heartwarming news during the global pandemic.

Many of his newfound fans and supporters have been sending their best wishes to Capt. Moore and his family.

U.K. Prime Minister Boris Johnson said, “You’ve inspired the whole nation, and I know we are all wishing you a full recovery.”

Matt Hancock, Secretary of State for Health & Social Care, also sent his good wishes.

Capt. Moore lives in Bedfordshire, 50 miles northwest of London. He traveled to Barbados during Christmas, thanking British Airways and tourism officials for helping him scratch an item off his bucket list, according to NPR.

Last year, he also became a surprise top-selling singer – thanks to his recording of “You’ll Never Walk Alone,” which he performed along with singer Michael Ball and an NHS Voices of Care choir.

The news was published Monday on NPR.