Days after being cleared to end isolation after a coronavirus infection, the US president, Joe Biden, is is back to isolation after he tested positive again in a rare “rebound” case.

President Biden said he was experiencing no resurgence of symptoms but his doctor said he needs to protect other people around him.

Ad >>>

The White House confirmed that President Biden who ended isolation Wednesday consequently went back to isolation on Saturday after testing positive for COVID-19 on an antigen test.

It comes just days after he had tested negative following a bout of coronavirus.

The White House physician Kevin O’Connor said in a letter published by the White House that Biden would “reinitiate strict isolation procedures.”

O’Connor said there was no reason to have Biden undergo a course of treatment at present.

“I’ve got no symptoms but I am going to isolate for the safety of everyone around me. I’m still at work, and will be back on the road soon,” Biden wrote on Twitter.

The US Centers for Disease Control and Prevention (CDC) recommends isolation for so-called rebound cases for at least five days. According to the agency, most rebound cases remain mild and that severe disease during that period has not been reported.

The 79-year-old leader first tested positive last week and was treated with the anti-viral drug Paxlovid. He tested negative on Tuesday and Wednesday and ended isolation.