Archive · 6 Jan 2026
HPV Vaccination in Schools Cuts Cancer Risk
A new study found that when schools give HPV vaccines to many students, it can also help protect those who didn't get the vaccine.
HPV is a common infection that can cause cervical cancer.
The study looked at over 800,000 women in Sweden and found that unvaccinated women born in 1999 and 2000 had half the risk of serious cervical changes compared to unvaccinated women born earlier.
This is because their friends and classmates were vaccinated, which helped protect them too.
The researchers say this shows that vaccinating lots of people in schools is a good way to reduce cervical cancer risk for everyone.
However, they also said that other factors like differences in health care access might have affected the results.
School-based HPV vaccination programs may protect unvaccinated women through herd immunity.
Study analyzed data from over 800,000 unvaccinated women in Sweden born between 1985 and 2000.
Unvaccinated women born in 1999 and 2000 had half the risk of precancerous cervical changes compared to those born between 1985 and 1988.
Researchers advocate for universal vaccination initiatives, especially in schools, to maximize benefits.
Findings may be influenced by other factors like sexual behavior and healthcare access.
- Who
- Unvaccinated women in Sweden
- What
- Reduced risk of precancerous cervical changes due to herd immunity from school-based HPV vaccination
- When
- Study published on Tuesday, analyzed data from 1985-2000
- Where
- Sweden
- Why
- To understand the impact of school-based HPV vaccination on unvaccinated individuals
- Study Focus
- HPV vaccination impact on unvaccinated women
- Study Location
- Sweden
- Participants
- Over 800,000 unvaccinated women
- Time Period
- 1985-2000
- Key Finding
- 50% reduced risk of precancerous changes in unvaccinated women
- Vaccination Strategy
- School-based programmes
- Researcher
- Eva Meglic, Karolinska Institutet
- Journal
- The Lancet Public Health
