08/27/2026
The kids are heading back to school and that sometimes means more shots. Read on to learn about UNHS's measure of the month, childhood immunizations!
First things first, vaccines are one of the most successful medical advances in modern times. Since 1974, vaccination has prevented 154 million deaths worldwide, including 146 million children younger than 5 years. In the United States between 1994 and 2023, routine childhood vaccination prevented approximately 508 MILLION cases of illness, 32 MILLION hospitalizations, and over 1 MILLION deaths, saving an estimated $2.7 TRILLION in societal costs.
Now let's get some numbers straight. The vaccine schedule supported by the American Academy of Pediatrics and the American Academy of Family Physicians recommends 13 vaccines that protect kids against 16 diseases. If a child gets a flu shot every year, that's roughly 54 separate pokes by age 18 (give or take depending on combination vaccines). Here's an example: at age four years, when your child gets their booster shots for diphtheria, tetanus, pertussis, polio, measles, mumps, rubella, and chickenpox before starting kindergarten, how many vaccines do you think they get? At most offices, including UNHS, they get 2 pokes, each with 2 combination vaccines to protect against all 8 diseases.
This is not to say that vaccines never cause any adverse reactions. I hate getting poked with needles as much as the next person for one simple reason: it usually hurts! In fact, up to 80% of vaccine doses can cause what are called local adverse reactions that are typically mild and self-limited, including pain and swelling. Sometimes kids also feel achy and feverish afterwards. These symptoms are typically a sign that the body is reacting by activating the immune system to the vaccine. More severe reactions are rare but about 3% of kids can have prolonged pain and swelling of the injection site/limb. Taking acetaminophen after the vaccine is the treatment for all of these reactions and does not make the vaccine significantly less effective.
At the risk of making this post even longer, here are a few other points that I would be happy to discuss further if there's interest:
- thimerosal (a mercury compound) is currently used ONLY in multidose vials of flu vaccine (which are not used at every office) and exposure to thimerosal through vaccines is not associated with adverse neurologic outcomes
- The measles-mumps-rubella (MMR) vaccine (or any vaccine) is not associated with autism spectrum disorder
- Vaccines don’t contain full-strength germs and don’t contain ingredients that can harm persons who take the vaccine. Vaccines are mostly water.
- Medical organizations constantly monitor the safety of vaccines and respond to safety concerns, including sharing information with the public.
- Vaccines are better than building a natural immune response because many preventable diseases are dangerous and can cause lasting side effects.
- Getting multiple shots in one visit is not too much for the child's immune system. The amount of germs in vaccines is a drop in the bucket compared to the amount of germs kids come into contact with on a daily basis, just think about babies crawling on floors and the colds that get passed around schools. The recommended vaccine schedules are timed the way they are to provide the best protection possible and any delays weaken your child's protection.
- The technology used to develop the mRNA COVID-19 vaccines is not new. It has been extensively studied and used in cancer research.
- Not vaccinating your child affects your whole community. When many individuals have immunity to a disease, that protects people who aren’t or can’t be vaccinated. This is called herd immunity. If not enough people are vaccinated, deadly diseases like measles can return.
For more information:
https://familydoctor.org/childhood-vaccines-what-they-are-and-why-your-child-needs-them/
https://www.healthychildren.org/English/safety-prevention/immunizations/Pages/Recommended-Immunization-Schedules.aspx
https://www.chop.edu/vaccine-education-center
https://dhhs.utah.gov/up2date/