A single dose of the human papillomavirus vaccine is highly effective at preventing infections over three years, most likely lowering rates of cervical cancer and other diseases linked to the virus, according to a new study in Kenya.
A single-dose strategy would dramatically extend supplies of the vaccine, lower costs and simplify distribution, which would make vaccination a more viable option in countries with limited resources, experts said.
HPV is a sexually transmitted infection linked to cervical cancer and other malignancies. Health officials in many countries, including the United States, recommend two doses of the vaccine for adolescent girls younger than 15, and three doses for those who are older.