【用戶】etrnya
【年級】高三下
【評論內容】The human papillomavirus (HPV) is a virus that causes warts. There are over 100 different types of HPV. There are 40 that are sexually transmitted. The primary causes of cervical cancer are HPV types 16 and 18. Even though a Pap smear doesn’t test for HPV, it identifies cellular changes caused by the virus. By detecting cervical cancer cells early with a Pap smear, treatment can start before it spreads and becomes a bigger problem.