Vaccine Safety: Six Common Misconceptions : Part 4

by CDC

(Page 4 of 4)

5. Vaccine-preventable diseases have been virtually eliminated from the United States, so there is no need for my child to be vaccinated.

It's true that vaccination has enabled us to reduce most vaccine-preventable diseases to very low levels in the United States. However, some of them are still quite prevalent - even epidemic - in other parts of the world. Travelers can unknowingly bring these diseases into the United States, and if we were not protected by vaccinations these diseases could quickly spread throughout the population, causing epidemics here. At the same time, the relatively few cases we currently have in the U.S. could very quickly become tens or hundreds of thousands of cases without the protection we get from vaccines.

We should still be vaccinated, then, for two reasons. The first is to protect ourselves. Even if we think our chances of getting any of these diseases are small, the diseases still exist and can still infect anyone who is not protected. A few years ago in California a child who had just entered school caught diphtheria and died. He was the only unvaccinated pupil in his class.

The second reason to get vaccinated is to protect those around us. There is a small number of people who cannot be vaccinated (because of severe allergies to vaccine components, for example), and a small percentage of people don't respond to vaccines. These people are susceptible to disease, and their only hope of protection is that people around them are immune and cannot pass disease along to them. A successful vaccination program, like a successful society, depends on the cooperation of every individual to ensure the good of all. We would think it irresponsible of a driver to ignore all traffic regulations on the presumption that other drivers will watch out for him or her. In the same way we shouldn't rely on people around us to stop the spread of disease; we, too, must do what we can.

6. Giving a child multiple vaccinations for different diseases at the same time increases the risk of harmful side effects and can overload the immune system.

Children are exposed to many foreign antigens every day. Eating food introduces new bacteria into the body, and numerous bacteria live in the mouth and nose, exposing the immune system to still more antigens. An upper respiratory viral infection exposes a child to 4 - 10 antigens, and a case of "strep throat" to 25 - 50. According to Adverse Events Associated with Childhood Vaccines, a 1994 report from the Institute of Medicine, "In the face of these normal events, it seems unlikely that the number of separate antigens contained in childhood vaccines . . . would represent an appreciable added burden on the immune system that would be immunosuppressive." And, indeed, available scientific data show that simultaneous vaccination with multiple vaccines has no adverse effect on the normal childhood immune system.

A number of studies have been conducted to examine the effects of giving various combinations of vaccines simultaneously. In fact, neither the Advisory Committee on Immunization Practices (ACIP) nor the American Academy of Pediatrics (AAP) would recommend the simultaneous administration of any vaccines until such studies showed the combinations to be both safe and effective. These studies have shown that the recommended vaccines are as effective in combination as they are individually, and that such combinations carry no greater risk for adverse side effects. Consequently, both the ACIP and AAP recommend simultaneous administration of all routine childhood vaccines when appropriate. Research is under way to find ways to combine more antigens in a single vaccine injection (for example, MMR and chickenpox). This will provide all the advantages of the individual vaccines, but will require fewer shots.

There are two practical factors in favor of giving a child several vaccinations during the same visit. First, we want to immunize children as early as possible to give them protection during the vulnerable early months of their lives. This generally means giving inactivated vaccines beginning at 2 months and live vaccines at 12 months. The various vaccine doses thus tend to fall due at the same time. Second, giving several vaccinations at the same time will mean fewer office visits for vaccinations, which saves parents both time and money and may be less traumatic for the child.

About the Author

www.cdc.gov
The Centers for Disease Control and Prevention (CDC) is one of the 13 major operating components of the Department of Health and Human Services (HHS), which is the principal agency in the United States government for protecting the health and safety of all Americans and for providing essential human services, especially for those people who are least able to help themselves.