Former CNN talk show host Larry King has been in hospital with Covid-19 for more than a week, the news channel reported on Saturday.
Citing an unidentified person close to the family, CNN said King, 87, is undergoing treatment at Cedars-Sinai Medical Centre in Los Angeles.
Hospital protocols mean King’s family members have been unable to visit him.
The Peabody Award-winning broadcaster was among America’s most prominent interviewers of celebrities, presidents and other newsmakers during a half-century career that included 25 years with a nightly show on CNN.
In recent decades, he has suffered a number of medical issues including heart attacks and diagnoses of diabetes and lung cancer.
Last year, King lost two of his five children within weeks of each other. Son Andy King died of a heart attack at 65 in August, and daughter Chaia King died from lung cancer at 51 in July.