A study found that taking just two doses of the HPV vaccine may be as effective at preventing cervical cancer as taking the recommended three doses. It's great news, since plenty of people aren't getting all three shots anyway.
According to USA Today, the finding is the result of an analysis of data from the National Cancer Institute's Costa Rica Vaccine Trial. The 7,466 women enrolled in the study were given either the HPV vaccine Cervarix, or a Hepatitis A vaccine. The idea was to give the subjects all three shots, but as often happens in the U.S., 20% only wound up getting one or two doses.