WASHINGTON (AP) As the COVID-19 omicron variant surges across the United States, top federal health officials are looking to add a negative test along with its five-day isolation restrictions for asymptomatic Americans who catch the coronavirus, the White Houses top medical adviser said Sunday.

Dr. Anthony Fauci said the Centers for Disease Control and Prevention is now considering including the negative test as part of its guidance after getting significant pushback on its updated recommendations last week.

Under that Dec. 27 guidance, isolation restrictions for people infected with COVID-19 were shortened from 10 days to five days if they are no longer feeling symptoms or running a fever. After that period, they are asked to spend the following five days wearing a mask when around others.

The guidelines have since received criticism from many health professionals for not specifying a negative antigen test as a requirement for leaving isolation.