NBCUniversal’s CEO Jeff Shell has informed the company that he has tested positive for the Chinese coronavirus.

Shell, 55, alerted the staff of his diagnosis in a memo in which he said that he is asymptomatic and will be self-quarantined and working from home.

“I recently have been feeling under the weather and just learned that I have tested positive for Covid-19,” Shell wrote in the email, CNBC reports. “Although the virus has been tough to cope with, I have managed to work remotely in L.A. and am improving every day.”

Shell replaced Steve Burke as CEO last year.

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Larry Edgeworth, 61, an NBC News technician with preexisting conditions passed away last week from the virus. He was a longtime employee at their 30 Rockefeller Plaza headquarters in New York

“As we have heard from medical professionals, those with underlying health concerns are sadly the most vulnerable,” NBC News Chairman Andy Lack wrote Friday morning.

Stacy Brady, NBCUniversal’s executive vice president of field and production operations, said he was known as the “gentle giant who would give you the shirt off his back.”

“Larry was a gentle bear of a man, the heart and soul of our extended NBC family,” Andrea Mitchell, NBC News’ chief foreign affairs correspondent, said. “I was always cheered and reassured knowing he was on the team in the field. He always had my back whether here in the U.S. or in the most dangerous situations around the world.”

At least two other NBC News employees also tested positive in the days surrounding his death.