HPV vaccine 4-valent and 9-valent difference

The main difference between the 4-valent and 9-valent hpv vaccines is that the type of prevention is different. The 9-valent vaccine can prevent the higher risk HPV virus, while the 4-valent vaccine can only prevent the infection of 4 HPV viruses. At the same time, the appropriate age for 4-valent hpv vaccine is 20-45 years old, while the appropriate age for 9-valent vaccine is 16-26 years old. Therefore, if the age is appropriate, it is better to vaccinate 9-valent vaccine. However, if there is a sexual history before vaccination, cervical cancer screening is required before vaccination with these two vaccines. In daily life, attention should be paid to keeping private parts clean, changing underwear frequently, and exposing underwear frequently. At the same time, active exercise should be taken to improve your immunity.