One out of every 600,000 doses of hepatitis B vaccine can cause a serious reaction involving swelling of the mouth, difficulty breathing, low blood pressure and shock. The hepatitis A vaccine can cause soreness at the site of the injection, and headaches in 5 percent of the people inoculated. Hib is given to prevent bacterial infections that can affect the brain, bloodstream, bones, joints, lungs, and windpipe. Before the vaccine was developed, Hib was the most common cause of meningitis, an infection of the brain that can lead to paralysis, deafness, mental retardation and death. Soreness at the site of the injection, and occasionally a low-grade fever.
Mumps is a viral infection characterized by swelling of the salivary glands near the neck.
It can lead to deafness, meningitis, painful swelling of the testicles or ovaries, and, rarely, death. It can cause birth defects or miscarriage if a woman is infected during the first three months of her pregnancy. Soreness at the site of the injection, and occasionally a low-grade fever. There are rare causes of children developing a high fever five to 12 days after being inoculated with the measles vaccine. Some children may develop a mild measles-like rash a week following the injection, but can still be vaccinated in the future.