Pfizer Inc Chief Executive Officer Albert Bourla said on Saturday he had tested positive for COVID-19.
"I’m feeling well and symptom free," Bourla said in a statement.
Bourla, 60, back in August had contacted COVID and had started a course of the company's oral COVID-19 antiviral treatment, Paxlovid.
Bourla has received four doses of the COVID vaccine developed by Pfizer and its German partner BioNTech (22UAy.DE).
The chief executive said he has not yet taken the new bivalent booster.

