polysaccharide vaccines

Polysaccharide vaccines are a type of vaccine that protects against certain bacterial infections by using a piece of the bacteria's outer coating, made of sugar molecules (polysaccharides). These vaccines help the immune system recognize and remember the bacteria, enabling the body to mount a quicker response if exposed in the future. They are often used for diseases like pneumonia and meningitis. However, they may not work as effectively in young children or in people with weakened immune systems, as these groups often require more advanced vaccine types to trigger a stronger immune response.