The Pneumococcal Conjugate Vaccine (PCV) is a vaccine designed to protect against infections caused by the Streptococcus pneumoniae bacteria. This bacteria can lead to serious illnesses such as pneumonia, meningitis, and bloodstream infections. The vaccine works by helping the immune system recognize and fight these bacteria, reducing the risk of severe disease. PCV is typically given to infants and young children, as they are at higher risk for pneumococcal infections. It is administered in a series of doses, usually starting at two months of age. Vaccination not only protects individuals but also helps prevent the spread of infections within the community.