Could an end to cervical cancer be near? A new study says the HPV vaccine has resulted in an 83% decrease in the top cancer-causing strains of HPV and a 51% decrease in precancerous lesions among teenage girls.
programs significantly reduce human papillomavirus infections and precancerous cervical lesions, a new global review finds.Researchers analyzed 65 studies that included data collected over eight years from more than 60 million people in 14 high-income countries.that cause 70% of cervical cancers -- HPV 16 and 18.
In addition, they reported an 83% decrease among 13- to 19-year-old girls and and a 66% decrease among women in their early 20s five to eight years after vaccination. There was a 54% reduction in three other types of HPV -- 31, 33 and 45 -- in teen girls. Researchers also found significant decreases in precancerous cervical lesions, with a 51% reduction in 15- to 19-year-olds and a 31% reduction in 20- to 24-year-olds.
There were far fewer cases of genital warts, as well. Cases decreased 67% among 15- to 19-year-old girls and 48% in boys; 54% in 20- to 24-year-old women and 32% in men; and 31% in 25- to 29-year-old women."We saw that programs with multiple age cohorts [different age groups] of girls vaccinated and high vaccination coverage have greater direct impact and herd effects," study author Melanie Drolet said in a journal news release.
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