HealthDay News — Between 2015 and 2018, there was a 79.9% increase in the proportion of parents who refused the human papillomavirus (HPV) vaccine for their adolescents owing to safety concerns, according to a study published online September 17 in JAMA Network Open.

Kalyani Sonawane, PhD, from the UTHealth School of Public Health in Houston, and colleagues used data from the National Immunization Survey and Vaccine Adverse Event Reporting System to assess trends in HPV vaccine safety concerns and spontaneous adverse event reporting for HPV vaccination from 2015 to 2018. The analysis included caregivers of 39,364 unvaccinated adolescents.

The researchers found that citing safety concerns as the primary reason for not initiating the HPV vaccine series increased from 13.0% in 2015 to 23.4% in 2018, or roughly an increase from 170,046 to 259,157 US adolescents not initiating the vaccine because of safety concerns. In 30 states, the proportion of parents citing safety concerns as the main reason for HPV vaccine hesitancy increased, with the largest increases (more than 200%) seen in California, Hawaii, South Dakota, and Mississippi. During the study period, 16,621 adverse events were reported, with the adverse event reporting rate decreasing from 44.7 per 100,000 doses distributed in 2015 to 29.4 per 100,000 doses distributed in 2018. There was no change in the serious adverse event reporting rate, including those leading to hospitalizations, disability, life-threatening conditions, or death.

“These findings suggest an urgent need to combat safety concerns about the HPV vaccine in the United States,” the authors write.


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One author disclosed financial ties to Merck.

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