This site is intended for U.S. healthcare professionals.
Menu
Close
Menu
Close
The effectiveness of Prevnar 20 in adults age 18-49 and 50-59 was inferred by comparing the immune response to each of the 20 vaccine serotypes in each of these age groups (immunobridging) to the corresponding serotype-specific immune responses in adults age 60-64.1
To report an adverse event, please call 1-800-438-1985
Pfizer for Professionals 1-800-505-4426
This site is intended only for U.S. healthcare professionals. The products discussed in this site may have different product labeling in different countries. The information provided is for educational purposes only.
© 2025 Pfizer Inc. All rights reserved.