He tested positive for Covid-19, the institute said Wednesday.Fauci, 81, has mild symptoms and has been boosted twice, the institute said in a statement.

The institute told CNN that he is being treated with the antiviral medication Paxlovid.

NIAID said Fauci found out that he was positive on a rapid antigen test. The director will work from home and follow agency protocol, returning to the National Institutes of Health campus only after he tests negative.