‘Rebound’ coronavirus cases: What to know after Biden tests positive again

President Biden listens during a meeting with CEOs on the White House complex in Washington on July 28, two days before testing positive for the coronavirus again in a “rebound” infection. (Susan Walsh/AP)

President Biden is one of the latest patients to experience a “rebound” coronavirus infection following a course of Paxlovid, an antiviral used to treat people at risk of severe illness from covid-19.

Rebound cases, in which someone experiences symptoms or tests positive after completing the course of the medication and testing negative, have been described as rare, but some medical experts are saying they may be more common than previously thought.

Biden began his Paxlovid treatment shortly after testing positive. He emerged from isolation on Wednesday after he started testing negative, but the White House announced Saturday that he had again tested positive and was not experiencing symptoms.

Biden tests positive again for coronavirus after Paxlovid ‘rebound’

Here’s what to know about rebound cases of the coronavirus following Paxlovid treatment.

Coronavirus: What you need to know

The latest: The CDC has loosened many of its recommendations for battling the coronavirus, a strategic shift that puts more of the onus on individuals, rather than on schools, businesses and other institutions, to limit viral spread.

Variants: BA.5 is the most recent omicron subvariant, and it’s quickly become the dominant strain in the U.S. Here’s what to know about it, and why vaccines may only offer limited protection.

Vaccines: Vaccines: The Centers for Disease Control and Prevention recommends that everyone age 12 and older get an updated coronavirus booster shot designed to target both the original virus and the omicron variant circulating now. You’re eligible for the shot if it has been at least two months since your initial vaccine or your last booster. An initial vaccine series for children under 5, meanwhile, became available this summer. Here’s what to know about how vaccine efficacy could be affected by your prior infections and booster history.

Guidance: CDC guidelines have been confusing — if you get covid, here’s how to tell when you’re no longer contagious. We’ve also created a guide to help you decide when to keep wearing face coverings.

Where do things stand? See the latest coronavirus numbers in the U.S. and across the world. The omicron variant is behind much of the recent spread.

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