For Sonja O’Leary, MD, higher rates of vaccination against human papillomavirus came with the flip of a switch.
Dr. O’Leary, the interim director of service for outpatient pediatric services at Denver Health and Hospital Authority, and her colleagues saw rates of HPV and other childhood immunizations drop during the COVID-19 pandemic and decided to act. Their health system, which includes 28 federally qualified health centers, offers vaccines at any inpatient or outpatient visit based on alerts from their electronic health record.
“It was actually really simple; it was really just changing our best-practice alert,” Dr. O’Leary said. Beginning in May 2021, and after notifying clinic staff of the impending change, DHHA dropped the alert for first dose of HPV from age 11 to 9.
The approach worked. Compared with the first 5 months of 2021, the percentage of children aged 9-13 years with an in-person visit who received at least one dose of HPV vaccine between June 2021 and August 2022 rose from 30.3% to 42.8% – a 41% increase. The share who received two doses by age 13 years more than doubled, from 19.3% to 42.7%, Dr. O’Leary said.
Frustrated efforts
Although those figures might seem to make an iron-clad case for earlier vaccinations against HPV – which is responsible for nearly 35,000 cases of cancer annually – factors beyond statistics have frustrated efforts to increase acceptance of the shots.
Data published in 2022 from the U.S. Centers for Disease Control and Prevention found that 89.6% of teens aged 13-17 years received at least one dose of tetanus, diphtheria, and acellular pertussis vaccine, and 89% got one or more doses of meningococcal conjugate vaccine. However, only 76.9% had received one or more doses of HPV vaccine. The rate of receiving both doses needed for full protection was much lower (61.7%).
Both the American Academy of Pediatrics and the American Cancer Society now endorse the strategy of offering HPV vaccine as early as age 9, which avoids the need for multiple shots at a single visit and results in more kids getting both doses. In a recent study that surveyed primary care professionals who see pediatric patients, 21% were already offering HPV vaccine at age 9, and another 48% were willing to try the approach.
What was the most common objection to the earlier age? Nearly three-quarters of clinicians said they felt that parents weren’t ready to talk about HPV vaccination yet.
Noel Brewer, PhD, one of the authors of the survey study, wondered why clinicians feel the need to bring up sex at all. “Providers should never be talking about sex when they are talking about vaccine, because that’s not the point,” said Dr. Brewer, the distinguished professor in public health at the University of North Carolina at Chapel Hill. He pointed out that providers don’t talk about the route of transmission for any other vaccine.
Dr. Brewer led a randomized controlled trial that trained pediatric clinicians in the “announcement” strategy, in which the clinician announces the vaccines that are due at that visit. If the parent hesitates, the clinician then probes further to identify and address their concerns and provides more information. If the parent is still not convinced, the clinician notes the discussion in the chart and tries again at the next visit.
The strategy was effective: Intervention clinics had a 5.4% higher rate of HPV vaccination coverage than control clinics after six months. Dr. Brewer and his colleagues have trained over 1,700 providers in the technique since 2020.