Hide This

FREEHER HealthToolkit

HER Health Toolkit

Sign up for EmpowHER updates and you'll receive our
FREE HER Health Toolkit

Sexual Health

Get Email Updates

Related Checklists

Sexual Health Guide

Rosa Cabrera RN

Have a question? We're here to help. Ask the Community.

ASK

Health Newsletter

Receive the latest and greatest in women's health and wellness from EmpowHER - for free!

Is One Dose of the HPV Vaccine Enough?

By Stacy Lloyd HERWriter
 
Rate This
Is One Dose of the HPV Vaccine Enough? 0 5
is more than one dose of HPV vaccine necessary?
iStockphoto/Thinkstock

The HPV vaccine is used to protect against cervical cancer, which is often caused by HPV infections. The HPV vaccine is currently recommended as a three-dose series, but doctors have found it difficult to complete the series for many girls.

A new study from Costa Rica suggests that a single dose of the human papillomavirus (HPV) vaccine may be enough to protect women against infection with the virus over the long-term.

The study focused on a population of nearly 7,500 Costa Rican women aged 18-25. Although all were supposed to get the recommended three doses of the HPV vaccine at different times, about 20 percent did not.

The researchers looked for the presence of an immune response to the vaccine (measured by antibody levels) in blood samples drawn from 78, 192 and 120 women who received one, two, and three doses of the vaccine, respectively.

Results were compared with data from 113 women who did not receive vaccination but had antibodies against the viruses in their blood because they were infected with HPV in the past.

Researchers discovered active human papillomavirus antibodies in the women four years after they had received only one dose of Cervarix, a vaccine that protects against two HPV strains.

The study also found that women who received two doses six months apart appeared to have just as much antibody protection against HPV as those who received three doses.

Although antibody levels among women who received one dose were lower than among those who received three doses, the levels appeared stable, according to the researchers, which suggests that these are lasting responses.

In addition, the levels of antibodies in women from the one- and two-dose groups were 5-24 times higher than the levels of antibodies in women who did not receive vaccination, but had prior HPV infection.

"Because of the challenges associated with giving three doses [of HPV vaccine] I think it's very welcomed to see that there's a possibility that the vaccine may not need to be given in a three dose schedule," Dr. Mike Brady, a pediatric infectious disease specialist at Nationwide Children’s Hospital told Live Science.

Add a CommentComments

There are no comments yet. Be the first one and get the conversation started!

Image CAPTCHA
Enter the characters shown in the image.
By submitting this form, you agree to EmpowHER's terms of service and privacy policy

We value and respect our HERWriters' experiences, but everyone is different. Many of our writers are speaking from personal experience, and what's worked for them may not work for you. Their articles are not a substitute for medical advice, although we hope you can gain knowledge from their insight.

Improved

1709 Health

Changed

643 Lives

Saved

497 Lives
4 lives impacted in the last 24 hrs Learn More

Take Our Featured Health Poll

Do you think sex gets better as you age? :
View Results