Is there a difference between the nine-valent and four-valent bivalent vaccines?

Nine-valent quadrivalent bivalent HPV vaccine mainly has the difference of price, the type of virus, etc. Nine-valent vaccine is more expensive for women aged 16-26 years, which can prevent nine different types of high-risk HPV viral infections; bivalent and quadrivalent are for women aged 9-45 years, and the quadrivalent can not only prevent the infection of HPV16 and 18 types, but also prevent the infection of HPV6 and 11.
1. Price: The price of bivalent HPV (human papillomavirus) vaccine is relatively low, the price of quadrivalent vaccine is between bivalent and nine-valent, and the price of nine-valent vaccine is the highest.
2. For the types of viruses: bivalent vaccine can only prevent HPV16 and HPV18 infections; quadrivalent vaccine can prevent HPV16, HPV18, HPV6 and HPV11 infections; nine-valent vaccine can prevent nine types of HPV16, 18, 6, 11, 31, 33, 45, 52 and 58 infections.
3. Injection age group: bivalent and quadrivalent are generally suitable for vaccination age is 9-45 years old, and nine-valent is generally suitable for vaccination age is 16-26 years old.