Human papillomavirus (HPV) is classified as:

Which statement most accurately describes the approximate number of known HPV types and the subset that are transmitted through sexual contact?

Persistent infection with high‑risk human papillomavirus (HPV) types such as HPV‑16 and HPV‑18 can lead to malignant transformation in certain epithelial tissues. Which group of cancers is most strongly associated with these high‑risk HPV infections?

A patient undergoes cryotherapy to remove genital warts caused by human papillomavirus (HPV). At a follow‑up visit, the lesions are no longer visible. The patient asks whether they can still pass HPV to a sexual partner. Which statement best explains the situation?

A patient is diagnosed with primary syphilis after a positive serologic test and the presence of a painless chancre. According to standard clinical guidelines, which treatment is considered the first-line therapy to eradicate the causative organism?