Human Papillomavirus (HPV) can infect different parts of the body. There are over 100 types of HPV. Some types of HPV are primarily sexually transmitted. Some of these can cause anal and genital warts and others can lead to more serious consequences such as cervical, penile and anal cancers. Other types of HPV can cause certain cancers of the head and neck.
As HPV is one of the most common sexually transmitted infections, it is estimated that more than 70 per cent of sexually active Canadian men and women will have a sexually transmitted HPV infection at some point in their lives. Most HPV infections occur without any symptoms and go away without treatment. However, in some people HPV infections can persist. This is especially dangerous if the persistent infection is a cancer-causing type. Persistent HPV infection with a cancer-causing type is the major cause of cervical cancer.
Gardasil® provides protection against four HPV types, two that cause 70 per cent of anogenital cancers and two that cause 90 per cent of all genital and anal warts.
Gardasil®9 provides protection against an additional five HPV types that cause an additional 14% of anogenital cancers. These vaccines are approved for use in females 9 to 45 years of age, and males aged 9 to 26.
Source: Health Canada