A virus called HPV causes almost all cases of cervical cancer. Vaccines can protect girls and women from some of the most threatening types of HPV. However, the vaccines are given in three doses, and in the United States most women don't complete the three-dose regimen
A new study suggests they may not need to.
In the study, reported in the Journal of the National Cancer Institute, researchers looked at thousands of women who received one to three doses of an HPV vaccine. The researchers followed them for about 4 years, taking note of women who had an HPV infection that lasted at least 10 months.
The vaccine seemed to be about as effective whether women had one, two, or three doses. As a result, the researchers point out that one or two doses might offer as much protection as all three. However, more research is needed to show whether the three-dose schedule offers longer protection, and whether these results apply to other HPV vaccines.
A new study suggests they may not need to.
In the study, reported in the Journal of the National Cancer Institute, researchers looked at thousands of women who received one to three doses of an HPV vaccine. The researchers followed them for about 4 years, taking note of women who had an HPV infection that lasted at least 10 months.
The vaccine seemed to be about as effective whether women had one, two, or three doses. As a result, the researchers point out that one or two doses might offer as much protection as all three. However, more research is needed to show whether the three-dose schedule offers longer protection, and whether these results apply to other HPV vaccines.
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