1. Diana Kudes, MD Pediatrician Suburban Family Practice at Norristown
Vaccine Hesitancy
Diana Kudes, MD
Pediatrician
Suburban Family Practice at Norristown

2. Decreasing vaccination rates
A national survey in 2010 of parents with children under 2yr found
- 3% refused all vaccines
-19.4% had refused or delayed at least 1 recommended vaccine.
These numbers are much higher in certain communities. Especially states that have laws allowing more exemptions.

3. Vaccine hesitancy
Term to describe the range of feelings parents have about vaccine concerns.
The World Health Organization defines it as “a behavior, influenced by a number of factors including issues of confidence (do not trust a vaccine or provider), complacency (do not perceive a need for a vaccine or do not value the vaccine), and convenience (access).

4. Why are parents worried about vaccinations or refuse them
Religious Reasons
Personal or Philosophical Reasons
Safety Concerns
Need More Information
Lack of Trust
They don’t think their child is at risk of getting the illness that the vaccine covers or if they get sick that there are easy treatments for the illness.
They are worried the vaccines could cause autism or other dangerous side effects including fever, disabilities,
Religious belief that go against at least some vaccines for example the use of aborted fetal tissue or gelatin.
Personal or philosophical reasons including the idea that innate immunity from exposure is better than vaccine produced.
Children get too many vaccines and that overwhelms the immune system.
They don’t know enough to make a decision.
They don’t see the risks outweigh the benefits of vaccinating.

5. Who Is Most Likely To Refuse Vaccines
Highly educated white families.
Parents living in states with philosophical exemptions from mandatory vaccines.

6. What probably doesn’t work to increase vaccine acceptance:
Studies looking at web based interventions that educate parents about vaccines have not been found to be effective.
Social media campaigns tend to only reinforce already held positions.
Epidemics of a vaccine preventable disease used to help increase vaccine acceptance but has not been seen in some recent outbreaks.

7. Things that may help
Surveys of parents have found 80% say their primary care provider positively influenced the decision to get vaccines. 1
Different studies have found 30-47% of vaccine hesitant parents agreed to vaccinate if they were engaged in discussions with their provider. 2
Mandatory vaccines for school with only medical exemptions. 3

8. How do we communicate with parents?
The 2013 study in Pediatrics by Opel et al found providers that present vaccines with a presumption the parents will be getting them for the child have higher rates of acceptance than those who present it as a shared decision.
The provider needs to explain that vaccines work; they are safe; they protect children from horrible diseases that they can get if not protected.
Conversations should be nonconfrontational.
Parents concerns need to acknowledged and addressed.

9. How To Present Information
Just providing scientific data is probably not enough.
More effective if you have a trusting relationship with the family.
Stories and personal examples are usually more effective than quoting statistics.
Sharing with families your decision to immunize family members can convey your comfort with the vaccine.
Motivational interviewing may be effective but has not been studied. Use principle of the 3 As: Ask, Acknowledge and Advise.

10. Policy
The American Medical Association, American Academy of Pediatrics, and Infectious Disease Society of America believe that all nonmedical exemptions for vaccines should be eliminated.

11. References
Edwards K, Hackell J. Countering Vaccine Hesitancy. AAP The Committee on Infectious Diseases. Pediatrics. 2016; 138(3):e
LaSalle G. When the answer to vaccines is “No”. The Journal of Family Practice. June 2018; 67:
McKee C, Bohannon K. Exploring the Reasons Behind Refusal of Vaccines. J Pediatr Pharmocol Ther Mar-Apr; 21(2)
Opel D, Heritage J et al. The Architecture of Provider-Parent Vaccine Discussions at Health Supervision Visits. Pediatrics 2013; 132: