TS News : HPV Vaccines Reducing Infections Even Among Unvaccinated
A Smart + Strong Site
Subscribe to:
Tu Salud magazine
E-newsletters
JOIN US Facebook Twitter Twitter
Back to home » TS News

 

August 2014
July 2014
June 2014
May 2014
April 2014
March 2014
February 2014
January 2014
December 2013
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
December 2008
November 2008
October 2008
September 2008
August 2008
July 2008
June 2008
May 2008
April 2008
March 2008
February 2008
January 2008
December 2007
November 2007
October 2007

emailprint


July 9, 2012

HPV Vaccines Reducing Infections Even Among Unvaccinated

The human papillomavirus (HPV) vaccine is reducing infections of certain strains of HPV even among girls and young women who are not vaccinated, according to a study published in the journal Pediatrics and reported by HealthDay News.

HPV is a virus known to cause genital warts and cervical cancer and is the most common sexually transmitted infection in the United States. The HPV vaccine works by preventing the most common types of HPV, and it’s recommended for all teen girls and women younger than 26. It’s most effective when individuals receive all three doses of the vaccine before becoming sexually active.

But a new study is showing that the vaccine not only prevents infections but also promotes what is known as “herd protection”—a decrease in infections among those who are not immunized. This is due to the lower rates of infection among others who might be transmitting the disease.

For the study, researchers looked at two groups of women ages 13 to 26, all of whom had already had sexual contact. One group was seen between 2006 and 2007—before the HPV vaccine was available—and the second group was seen between 2009 and 2010, after vaccines were readily available. About 60 percent of participants in the second group had received the vaccine.

Researchers found that from 2006 to 2010, the prevalence of the four most common strains of HPV decreased by about 60 percent, from about 32 percent to 13 percent. And among individuals who were vaccinated, rates of HPV infection fell from 32 percent to 10 percent. Most important, rates of infection among unvaccinated individuals fell from 30 percent to 15 percent—a 50 percent drop.

“This is a first look at how the vaccine is working in a real-world setting,” said Jessica Kahn, associate professor of pediatrics at Cincinnati Children’s Hospital Medical Center. “We were very encouraged to find the rates of HPV fell so dramatically, especially because the girls in the study already had sexual contact, some had more than one sexual partner and some only had one dose to be considered vaccinated.”

Why did researchers find such a dramatic drop?

“If girls are getting vaccinated, they are not spreading HPV to male partners, who then don’t spread it to other female partners,” Kahn explained.

However, although the prevalence of the four main HPV strains fell, the overall rate of HPV infection remained high. Infection by any HPV strain increased from 61 percent to 76 percent during the study’s two time periods, which researchers said highlights the need for vaccines.


Scroll down to comment on this story.



Name:

(will display; 2-50 characters)

Email:

(will NOT display)

City:

(will display; optional)

Comment (500 characters left):

(Note: The Tu Salud team reviews all comments before they are posted. Please do not include either ":" or "@" in your comment. The opinions expressed by people providing comments are theirs alone. They do not necessarily reflect the opinions of Smart + Strong, which is not responsible for the accuracy of any of the information supplied by people providing comments.)

Comments require captcha.
Please enter this number for verification:

| Posting Rules



Show comments (0 total)

 
Featured Video
Let's Stop HIV Together / Detengamos Juntos el VIH
For more information in Spanish, click here.
Miss Universe NLAAD Cielo Latino
> More Tu Salud TV

[ about Smart + Strong | about Tu Salud | advertising | contact us | advertising policy ]
© 2014 Smart + Strong. All Rights Reserved. Terms of use and Your privacy
Smart + Strong® is a registered trademark of CDM Publishing, LLC.