Bourla said he does not have any symptoms.
“While we’ve made great progress, the virus is still with us,” he said.
Getting infected can act like a booster and studies have shown that people have a relatively low risk of getting sick again for about three months after they recover.
People may not want to wait as long as three months if Covid-19 levels are high in the community or they have a reduced immune function, CNN has reported.
The CDC signed off on the updated booster shots from Pfizer and Moderna on September 1.
Pfizer/BioNTech’s updated vaccine is a 30-microgram dose authorized for people 12 and older. Moderna’s updated vaccine is a 50-microgram dose authorized for people 18 and older.