Question

27. An estimated 80% of the sexually active world population has been exposed to HPV. Why is it that exposure to HPV does not lead to cervical cancer every time? (A) HPV can't spread in humans (C) virus must infect basal stem cell layer (B) progression to cancer requires co factors (D) the virus cannot be cleared

Answer 1

Answer is C. progression to cancer require co factors

Co factors includes smoking, oral contraceptives and multiparty.

Usually HPV infection disappears within short period and does not cause cervical cell changes. Prolonged untreated HPV may contribute for cancer.