The polio vaccine protects against polio Polio Polio is a highly contagious, sometimes fatal enterovirus infection that affects nerves and can cause permanent muscle weakness, paralysis, and other symptoms. Polio is caused by a virus and... read more , a very contagious viral infection that affects the spinal cord and brain. Polio can cause permanent muscle weakness, paralysis, and sometimes death.
Two formulations are available:
The live-virus vaccine is no longer available in the United States because it can mutate to a strain that causes polio in about 1 of every 2.4 million people who receive the vaccine.
The polio vaccine may be combined with other vaccines, such as the diphtheria, tetanus, and pertussis vaccine and sometimes hepatitis B vaccine or Haemophilus influenzae vaccine.
For more information, see the Centers for Disease Control and Prevention's (CDC) Polio vaccine information statement.
(See also Overview of Immunization Overview of Immunization Immunization enables the body to better defend itself against diseases caused by certain bacteria or viruses. Immunity (the ability of the body to defend itself against diseases caused by certain... read more .)
As a part of routine childhood vaccination Childhood Vaccination Schedule Most doctors follow the vaccination schedule recommended by the Centers for Disease Control and Prevention (CDC—see the schedule for infants and children and the schedule for older children... read more , the polio vaccine is given in four doses: at age 2 months, 4 months, 6 to 18 months, and 4 to 6 years.
Because polio is now so rare in the United States, unvaccinated people over 18 years of age are not given the vaccine unless they are likely to be exposed to the polio virus—for example, if they are traveling to an area where polio is common (see CDC: Travelers' Health), working in a laboratory with materials that may contain the virus, or treating people who may have polio.
If people have a temporary illness, doctors usually wait to give the vaccine until the illness resolves (see also CDC: Who Should NOT Get Vaccinated With These Vaccines?).
The following are some English-language resources that may be useful. Please note that THE MANUAL is not responsible for the content of these resources.
Centers for Disease Control and Prevention (CDC): Information statement about polio vaccine