Vaccinations Vaccine Schedule

Not every vaccine will last for a lifetime. Many vaccines need to be given more than once to be completely effective. These are called re-vaccinations.

Most people require different vaccinations at different ages. For instance, children receive certain vaccinations during infancy and before elementary school. Most colleges require select immunizations before admitting young adults.

People may also need vaccines if they are exposed to certain diseases or elements. If a person is bitten by a wild animal, she may need a series of rabies vaccinations, while a person who steps on a rusty nail may require a tetanus vaccination. If you’re traveling to a foreign country, you may need to receive re-vaccinations for diseases that are prevalent overseas.

Typical Vaccination Schedule

The vaccination schedule for children requires roughly five doctor visits within a short period of time. Almost all of these vaccines are given in a series. Re-vaccination may also be necessary when a child is a few years older, before entering school.

The following are the recommended vaccines for children, and how many re-vaccinations, or boosters, are required:

Vaccine Required Doses
Hib (haemophilus influenzae type b) Three or four doses before a child is 12 to 18 months old
DTP (diphtheria, tetanus, pertussis) Four doses, given when a child is 2 months, 4 months, 6 months and 15 to 18 months old; booster at 4 to 6 years old
Hepatitis B Three doses before a child is 15 months old
Polio Two doses
MMR (measles, mumps, rubella) Two doses; one at 12 to 15 months old and one at 4 to 6 years old
Chicken pox One dose for a child between the ages of 12 months and 12 years old

While this may seem excessive to some, many parents simply don’t understand the potential severity of some of these diseases. Many are life-threatening and can affect young children far worse than they would an adult. In order to protect your child’s health, keep up with re-vaccinations and booster shots set forth in your pediatrician’s vaccination schedule.


Centers for Disease Control and Prevention. (2010). 2010 child