Available Vaccines

Information provided by the PA Department of Health and the Centers for Disease Control

Currently, two vaccines are authorized and recommended to prevent COVID-19:

Pfizer-BioNTech COVID-19 vaccine

• Recommended for people aged 16 years and older.
• 2 shots given 21 days apart.
• 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.

Moderna's COVID-19 vaccine

• Recommended for people aged 18 years and older.
• 2 shots given 28 days apart.
• Based on evidence from clinical trials, the Moderna vaccine was 94.1% effective at preventing laboratory-confirmed COVID-19 illness in people who received two doses who had no evidence of being previously infected.

Vaccines in Phase 3 Clinical Trials

Phase 3 clinical trials are in progress or being planned for three additional COVID-19 vaccines in the United States:

• AstraZeneca's COVID-19 vaccine
• Janssen's COVID-19 vaccine
• Novavax's COVID-19 vaccine