Risks of multiple vaccinations
Some people have voiced concern about immunizations when multiple vaccines for different diseases are given at the same time. These people fear that harmful side effects are more likely because the child's immune system is not able to combat all of the vaccine organisms at the same time.
Getting more than one shot (injection) of vaccine at the same time may seem like a lot to handle. But babies have billions of immune system cells in their bodies. Beginning at birth, the immune system actively responds to hundreds of thousands of invading organisms.
As extra assurance, there is no evidence that multiple vaccines harm or weaken the immune system.1
The U.S. Advisory Committee on Immunization Practices (ACIP) and the American Academy of Pediatrics both recommend giving a child all of the routine childhood vaccines he or she needs at the same doctor visit.
Studies are being done to find ways of combining more vaccines into a single shot, such as the measles-mumps-rubella shot (MMR). Combining vaccines means fewer shots need to be given. Even though the vaccines are combined, each provides the same protection that it would if it had been given alone. Also, the combined vaccines have no greater risk for side effects than do individual vaccines.2
| Author: | Debby Golonka, MPH | Last Updated: May 29, 2008 |
| Medical Review: | Michael J. Sexton, MD - Pediatrics | |
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