pneumococcal vaccine

The pneumococcal vaccine protects against Streptococcus pneumoniae, a bacterium that causes illnesses like pneumonia, sinusitis, ear infections, and meningitis. These bacteria, called pneumococci, are typically found in the upper respiratory tract without causing harm. However, they can become dangerous for individuals with weakened immune systems, including infants, the elderly, and those with underlying health conditions.1

The vaccine works by introducing polysaccharide antigens from common types of pathogenic pneumococci. This stimulates the body's immune system to produce antibodies, providing protection against future infection. Immunity developed after a pneumococcal infection is specific to the type of bacteria and is lifelong. The vaccine can be administered to children over two years old and adults as a single intramuscular injection.2