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date of vaccine introduction & Pre and Post-vaccine incidence rates

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date of vaccine introduction & Pre and Post-vaccine incidence rates

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Since the vaccine was introduced in 2006, vaccine-type HPV prevalence decreased 56 percent among female teenagers 14-19 years of age. Results of HPV DNA testing showed that in the prevaccine era, among girls aged 14-19 years, the prevalence of the 4vHPV strains was 11.5%. In the postvaccine era, 4vHPV prevalence was 4.3%. A similar decline in prevalence was seen among women aged 20-24 years, from 18.5% (prevaccine) to 12.1% (postvaccine).

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HPV is transmitted through intimate skin-to-skin contact. You can get HPV by having vaginal, anal, or oral sex with someone who has the virus. HPV is so common that nearly all men and women get it at some point in their lives. HPV can be passed even when an infected person has no signs or symptoms. HPV is a group of more than 150 related viruses. HPV is named for the warts (papillomas) some HPV types can cause. Some other HPV types can lead to cancer. Men and women can get cancer of mouth/ throat, and anus/rectum caused by HPV infections. But there are vaccines that can prevent infection with the types of HPV that most commonly cause cancer.

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Human papillomavirus is a member of the Papillomaviridae family.

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hpv infections do not cause symptoms. however, persistent infection with specific types of hpv may lead to precancerous lesions. if untreated, these lesions may progress to cervical cancer. symptoms of cervical cancer include irregular periods; bleeding after sexual intercourse; back, leg, or pelvic pain; fatigue, weight loss, loss of appetite; vaginal discomfort; or a single swollen leg.

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complications that could arise as a result of the disease

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complications that could arise as a result of the disease

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genital warts, cervical cancer, cancers of the anus, vulva, vagina, and penis, respiratory papillomatosis (a disease in which tumors grow in the air passages leading from the nose and mouth into the lungs)

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penetrative sex, skin-to-skin genital contact, or through birth (uncommon)

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the estimated incubation period from HPV infection to genital wart development is 2 weeks to 8 months, with the majority of genital warts appearing 2-3 months after an HPV infection.

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cdc recommends that 11 to 12 year olds receive two doses of HPV vaccine at least six months apart to protect against cancers caused by HPV infections. three doses are recommended for people with weakened immune systems aged 9-26 years.