Pneumococcal polysaccharide vaccine (PPSV)

The Pneumococcal polysaccharide vaccine (PPSV) is a shot that helps protect adults, especially those over 65 or with certain health conditions, from pneumococcal infections caused by the bacteria Streptococcus pneumoniae. These infections can lead to serious illnesses like pneumonia, meningitis, and bloodstream infections. The vaccine works by stimulating your immune system to recognize and fight the bacteria if you're exposed. It contains parts of the bacteria (polysaccharides) that train your immune system without causing disease. PPSV is an effective way to reduce the risk of severe pneumococcal diseases.