HPV 51 positive is contagious. HPV is contagious and is mainly transmitted through sexual intercourse and close contact. 1. Sexual life: Sexual life with HPV 51-positive patients can cause cross contagion through sexual contact and close contact, and it is possible that HPV can be transmitted to the other person who has sex, leading to infection of the other person who has sex with the other person with HPV. 2. Close contact: bed sheets, bedding, underwear, bath towels, etc. contaminated by the patient may also be infectious, or indirect contact with the patient’s skin, contact with the patient’s body fluids, and so on, may also be infected with HPV. Human papillomavirus type 51 positive, is a high-risk type, persistent infection and cervical cancer have a close association, it is recommended to actively seek medical treatment as prescribed by the doctor.