MONDAY, Feb. 10, 2020A single dose of the human papillomavirus (HPV) vaccine works as well as multiple doses to protect older teen girls against preinvasive cervical disease, which can develop into cervical cancer, researchers say. For the study, the researchers analyzed data on more than 133,000 females aged 9 to 26. Half weren’t vaccinated and half received one or more HPV vaccine doses between January 2006 and June 2015. Among 15- to 19-year-olds, those who were vaccinated had lower rates of preinvasive cervical disease than those who weren’t, the findings showed. Within five years, about 2.6% of those who weren’t vaccinated developed preinvasive cervical disease, compared with less than 2% who had received one shot or more, according to the report. The risk of preinvasive cervical disease was 36% lower for those who had one shot, 28% lower after two shots and 34% lower for those who had three doses, compared with those who weren’t vaccinated. For the youngest (9 to 14 years) and oldest (20 to 26 years) age groups, there were no significant differences in risk for preinvasive cervical disease, according to the study published online Feb. 10 in the journal Cancer. “This study shows the impact of vaccinating at younger ages and its lasting long-term protection against cervical cancer,” said study author Dr. Ana Rodriguez. She’s an associate professor of obstetrics and… read on >







