"Price" does not refer to the price, but represents the virus type that can be prevented by the vaccine. Human papillomavirus is a "big family" that includes more than 200 different types.

"price" does not refer to the price, but represents the virus type that can be prevented by the vaccine. A vaccine that can prevent several types of vaccines is called a multivalent vaccine. human papillomavirus (hereinafter referred to as HPV) is a "big family" that includes more than 200 different types. According to their characteristics, they are divided into two categories: low-risk types such as type 6 and type 11, which are mainly related to genital warts; high-risk types such as type 16 and type 18, which are mainly related to cervical cancer .

HPV vaccine in , the one that can prevent types 16 and 18 is called bivalent vaccine. In addition to types 16 and 18, the quadrivalent vaccine can also prevent types 6 and 11; the nine-valent vaccine can prevent nine types, including type 6, type 11, type 16, type 18, type 31, type 33, type 45, type 52, and type 58. Some people have received bivalent or quadrivalent HPV vaccine a few years ago. Should they get nine-valent? You can get the vaccine, but from the perspective of preventing cervical cancer, the prevention effect of bivalent or quadrivalent vaccines is already good, so there is no need to get the nine-valent vaccine again. (Source: Beijing Obstetrics and Gynecology Hospital)

Source: Beijing 12320 listening to