Completion of vaccine series is low among eligible adolescents with important disparities by medical specialty, race, and insurance status.
University of Michigan
December 2, 2009
ANN ARBOR, Mich. – Three years after the vaccine to prevent human papillomavirus (HPV) was approved for use in the United States, researchers are discovering that usage rates for those targeted to take it is low.
Overall HPV vaccine use was low among adolescents. Among girls who were eligible to have received all three doses in the vaccination series, only 15 percent did so. This finding is consistent with a national study showing low vaccine series completion among 13 to 17 year-olds in 2007.
- Overall HPV vaccine use was low among adolescents. Among girls who were eligible to have received all three doses in the vaccination series, only 15 percent did so. This finding is consistent with a national study showing low vaccine series completion among 13 to 17 year-olds in 2007.
- Even though overall uptake of the vaccine among adolescents was low, once the vaccine series was initiated there was a relatively high likelihood they would receive all three doses, with more than three quarters of those eligible getting second and third doses.
- Despite recommendations from the Advisory Committee on Immunization Practices for universal vaccination of all 11-12 year old females against HPV, this age group was significantly less likely to initiate the vaccine series when compared to 13-15 year-olds, or those over the age of 16. However, among girls that did initiate the series, all three age groups had a similar likelihood of being fully vaccinated with all three doses.
- Gynecologists were less likely to initiate the vaccine series than pediatricians or family practitioners. However, after the three-dose series began, there were no statistical differences in series completion among patients seen at each medical specialty.
- Most adolescents received the first dose of vaccine at a “well child check up.” Subsequent doses of vaccine were typically provided at “immunization only appointments,” where the patient receives the vaccine from a nurse and has no interaction with a doctor. However, this pattern varied by age. The older an adolescent, the more likely they were to receive second and third doses at a “sick visit” with the doctor.