The pneumococcal vaccine helps protect against serious illnesses like pneumonia and meningitis. It's recommended for people at higher risk of these illnesses, such as babies and adults aged 65 and over. Know Pneumococcal vaccination schedule, cost, availability, precautions, safety, side-effects and FAQs in India. Free expert consultation & home vaccination with INVC. Pneumococcal Polysaccharide Vaccine is a vaccine which helps develop immunity by initiating a mild infection. This type of infection does not cause illness but stimulates the body's immune system to produce antibodies (proteins) to protect against any future infections. Pneumococcal Conjugate Vaccines can protect children from Streptococcus pneumoniae, which is the most common cause of severe bacterial pneumonia among children.