Haemophilus influenzae, or Hib , causes brain swelling that can result in permanent damage or death. It can cause infections of the blood, joints, throat or heart. Polio causes paralysis of the muscles. Most people never completely recover. Pneumococcal is one of the leading causes of ear infections, meningitis, pneumonia, sinus and blood infections among children.
Severe cases can lead to death.
Measles causes a rash and high fever. It can also cause deafness, brain damage or death. Mumps can cause swelling of the neck glands, nerve damage and deafness. Chickenpox, or Varicella , is usually a mild disease in healthy children. In severe cases it can cause infection leading to death.