Why Polio is an extremely contagious virus that leads to paralysis in about 1 in 100 cases. In the early 1950s, it was extremely common, and thousands of Americans were left paralyzed. Polio has been virtually eliminated from the United States because of the vaccine.
When 2 months, 4 months, 6 to 18 months
Common Side Effects Slight pain, redness, and tenderness at the injection site
Why Before a vaccine became available, rotavirus was the most common cause of severe diarrhea and dehydration in kids and the number-one reason that infants were admitted to the hospital during the winter, according to Dr. Cunningham. Since 2006, when the vaccine was introduced, hospitalizations for diarrhea have been cut nearly in half, according to a study from the Centers for Disease Control and Prevention, in Atlanta.
When 2 months, 4 months, 6 months
Common Side Effects None