Pfizer CEO Albert Bourla, head of one of the largest producers of Covid-19 vaccines, has tested positive for coronavirus.
In a press release published on Monday, the American firm specifies that Bourla, who has gone into isolation, has mild symptoms and is on treatment with the Paxlovid pill from Pfizer.
Bourla received four injections of Comirnaty, the COVID-19 vaccine developed by the New York drugmaker with BioNTech, the same source said.
More than 128 million people in the United States have received Pfizer’s two-shot vaccine since it was introduced more than a year ago and nearly 61 million have received a first booster shot, according to the Centers for Disease Control and Prevention (CDC).
Scientists, quoted by the Associated Press, say the vaccine still offers strong protection against hospitalization and serious illness, noting however that the evolution of the virus has made it more difficult for vaccines to prevent all forms disease to develop.
Pfizer and another vaccine maker, Moderna, are updating their vaccines to provide protection against new versions of the virus in preparation for a fall recall campaign.