Multiple health risks of HPV
Different types of HPV infect different parts of the body, but we don’t know why they target different areas. Types 16 and 18 are considered ’high risk’ because they can cause cancer and are responsible for:
- 25% of CIN 1 lesions;
- 70% of CIN 2 and 3 lesions, and anogenital cancers.
’Low risk’ types 6 and 11 generally do not cause cancer but are associated with:
- 25% of CIN 1 lesions;
- 90% of genital warts.
Multiple outcomes of HPV
| Disease | High risk (causes cancer) |
Low risk (rarely causes cancer) |
| Plantar warts | 1 | |
| Common warts | 2, 27 | |
| Flat warts |
3, 10 | |
| Oral Warts Genital Warts Anal warts |
6, 11 (and others) 6, 11 (and others) 6, 11 (and others) |
|
| Lesions CIN 1 CIN 2 or 3 |
16, 18 (and others) 16, 18 (and others) |
6, 11 |
| Cervical cancer | 16, 18 (and others) | |
| Anal cancer Vaginal cancer Penile cancer and Laryngeal cancer |
16, 18 (and others) 16, 18 (and others) 16, 18 (and others) 16, 18 (and others) |
|
| Oral cancer | 16 |
