HPV is a virus known as Human Papillomavirus (HPV). There are more than 100 subtypes of HPV, which are probably classified into low-risk and high-risk types based on their carcinogenicity. The main route of HPV infection is sexual contact, but it is not the only route. HPV infection is found in children and virgins. HPV infection is actually a common occurrence and has been detected since adolescence, so it can be said that everyone is a host of HPV infection, but under normal circumstances, HPV is cleared by the human immune system, so a brief infection is not a special event, similar to when you get a cold virus infection, without even having cold symptoms, your virus has been cleared from the body is cleared. What really causes trouble are those viral infections that persist. If the same subtype of HPV virus persists for more than 2 years, then there is a chance (note: chance, not inevitable) that it will lead to precancerous lesions of the cervix, and the development from precancerous lesions to cancer is also a long process, usually taking 10-15 years. At present, screening for high-risk HPV is not recommended for people under 30 years of age because transient infection will be more common, and even if the screening is positive, there is a high possibility that it will be cleared after some time. The current recommendations for cervical screening are approximately as follows: Under 21 years of age, no screening is needed Between 21 and 29 years of age, cytology screening is performed every 3 years Between 30 and 65 years of age, combined HPV and cytology screening is performed every 5 years or cytology screening is performed every 3 years. Above 65 years of age, screening can be stopped if previous results are normal. So it is probably understandable that HPV testing is not necessary under the age of 30. Above 30 years old, even if you are found to have high-risk HPV infection, there is no need to be too nervous because although it is a high-risk virus, it does not mean that you have cervical cancer, and the important thing at this time is screening cervical smear. Some scholars recommend direct colposcopy and biopsy to exclude cervical cancer. Currently, there is no effective treatment for HPV infection, and therefore treatment for HPV carrier status is not recommended. The possibility of future HPV therapies cannot be ruled out, but at this stage, there is no good evidence to support this. HPV vaccine is a preventive measure that has evidence to support that it can reduce the incidence of cervical cancer, and women aged 9 to 26 can consider HPV vaccination, but it is still not approved in China and can only be injected in Hong Kong. HPV vaccination is vaccination, but it does not mean exemption from cervical cancer, and regular cervical smear is still required.