Adaptive immunity, or acquired immunity, is the body’s specific, tailored defense system that learns to recognize and destroy pathogens like viruses and bacteria, providing long-lasting protection through memory cells (B and T cells) and antibodies, a process central to vaccination. It’s slower to activate than innate immunity but creates a highly specific, enhanced response for future encounters, often preventing illness after the first exposure. Characteristics Specificity: Targets specific an

How do vaccines work? Pediatrician Anita Chandra explains how vaccines teach your immune system how to recognize a disease so you don't become infected if exposed. Talk with your pediatrician if you have questions about your child's vaccines. | American Academy of Pediatrics