What is the difference between tetravalent and bivalent

Bivalent and quadrivalent refer to different types of HPV cervical vaccines, the main role of which is to prevent HPV virus infection, the main difference between the two is that the prevention of HPV subtypes are different, the prevention of disease and probability of disease is different, as well as the price of a certain difference.
The bivalent vaccine mainly prevents two types of viruses, HPV16 and 18, while the quadrivalent vaccine prevents four types of viruses, HPV6, HPV11, HPV16 and HPV18.
Because the quadrivalent vaccine is more comprehensive and has a higher probability of preventing disease, the price of the quadrivalent vaccine is also higher compared to the bivalent one.
In addition, no matter what kind of vaccine, you need to pay attention to the HPV vaccine active ingredient and other excipients have an allergic reaction need to be prohibited, the age of the person can go to the regular hospital to consult a professional physician to choose the appropriate vaccine.