Which strains of HPV are commonly associated with genital warts?

Human Papillomavirus (HPV) is a group of viruses that can cause various conditions, including genital warts and certain types of cancer. The strains of HPV that are most commonly associated with genital warts are types 6 and 11. These low-risk HPV types are primarily responsible for the majority of benign skin and mucosal lesions, including genital warts, also known as condylomata acuminata.

Strain 16 and 18, while well-known for their association with cervical cancer and high-risk lesions, do not typically cause genital warts. Instead, they are classified as high-risk types due to their ability to lead to malignancies. Strains 1 and 2 are more related to common warts (verrucae vulgaris) found on non-genital areas of the skin. Types 31 and 33, like 16 and 18, also fall under the high-risk category and are associated with cervical cancer but not with the development of genital warts. Therefore, the association of HPV types 6 and 11 with genital warts is well-established, making it the correct choice in this context.