Pfizer-BioNTech

Pfizer-BioNTech COVID-19 Vaccine Overview and Safety

General Information

• Name: BNT162b2
• Type of Vaccine: mRNA
• Number of Shots: 2 shots, 21 days apart
• How Given: Shot in the muscle of the upper arm
• Does NOT Contain: Eggs, preservatives, latex

How Well the Vaccine Works

• Based on evidence from clinical trials, the Pfizer-BioNTech vaccine was 95% effective at preventing laboratory-confirmed COVID-19 illness in people without evidence of previous infection.
• CDC will continue to provide updates as we learn more about how well the Pfizer-BioNTech vaccine works in real-world conditions.