Is cervical CIN1 contagious?

Cervical CIN1 is not contagious. The detailed explanation is as follows:

Cervical CIN1 refers to a precancerous lesion of the cervix. According to the severity of the condition, cervical intraepithelial neoplasia (CIN) is classified into three grades, with higher grades indicating more severe disease. CIN1 represents an early stage with mild disease and localized lesions, characterized by mild cellular proliferation in the cervical tissue. CIN1 is caused by infection with human papillomavirus (HPV). While HPV itself is not transmitted through respiratory droplets, it can be spread through sexual contact or by sharing personal items such as towels or toilets with an infected person. If there is any break or damage in the local mucosal tissue, the virus may enter the body through these damaged areas and cause infection. Therefore, individuals diagnosed with cervical CIN1 should seek medical treatment promptly and undergo regular follow-up examinations. In many cases, the condition may spontaneously revert to normal over time.

It is recommended to avoid sharing personal items with others in daily life. Towels, bed covers, and similar items should be disinfected regularly. Keeping indoor air fresh and ensuring proper ventilation can also support recovery.