Immunization · Pneumococcal
Pneumococcal Vaccine
The pneumococcal vaccine protects against a common bacterium that causes pneumonia, bloodstream infections, and meningitis.
In late 2024, the recommended age to start was lowered to 50, so more adults are now covered.
The Basics
Pneumococcus (Streptococcus pneumoniae) is a leading cause of pneumonia, and it can also invade the blood or the lining of the brain, causing severe illness. The vaccine protects against many of the most common and dangerous strains.
Who & When
Following an ACIP update in October 2024:
- All adults 50 and older should receive a pneumococcal conjugate vaccine (this was lowered from 65).
- Adults 19–49 with certain conditions (such as diabetes, heart, lung, liver, or kidney disease, a weakened immune system, or smoking) are also recommended to get it.
The bottom line: a pneumococcal vaccine for all adults 50 and older, and earlier with certain health conditions.
The Schedule
For most people this is a single dose of a conjugate vaccine (PCV15, PCV20, or PCV21). Depending on which product is used and your health history, an additional dose of a different pneumococcal vaccine is sometimes recommended, and we’ll advise based on your records.
Is It Safe?
Yes. Side effects are usually mild, a sore arm, and sometimes fatigue or a low fever. It can be given at the same visit as other vaccines, such as the flu shot.
Useful Links
Talk it through with Dr. Mui
Wondering if you’re due for a pneumococcal shot? We’ll check your history and take care of it. Book a visit.
Prefer to ask first? Text Dr. Mui at 617-675-4085.
This page is for general education and isn’t a substitute for professional medical advice, diagnosis, or treatment. Screening guidelines change over time and the right plan depends on your personal risk. Always talk with a qualified health provider about your specific situation.