Why are immunizations important?

Vaccines offer safe and effective protection from infectious diseases. By staying up-to-date on the recommended vaccines, individuals can protect themselves, their families and friends and their communities from serious, life-threatening infections.


Vaccines have eradicated smallpox, eliminated wild poliovirus in the U.S. and significantly reduced the number of cases of measles, diphtheria, rubella, pertussis and other diseases. Immunization is one of the most significant public health achievements of the 20th century.

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1. Why are immunizations important?
2. Who should be immunized?
3. When are immunizations given?