Nine-valent generally refers to the nine-valent HPV vaccine, which costs about $1,300 for a single shot. Nine-valent HPV vaccine is a protein vaccine that can prevent cervical cancer and precancerous lesions caused by nine subtypes of human papillomavirus infections. The cervical cancer vaccine requires three injections within six months, and after the injection, the body produces protective antibodies, which can play a role in preventing cervical cancer. The nine-valent cervical cancer vaccine can prevent lesions caused by HPV6, HPV11, HPV16, HPV18, HPV31, HPV33, HPV45, HPV52, and HPV58 types, and the current recommended age for cervical cancer vaccination is 16-26 years old. If other medications are used concurrently with this vaccine, adverse reactions may occur and it is recommended that you consult your doctor or pharmacist. In addition, it is important to note that hypersensitivity to the active ingredient of the vaccine or any of the excipient components needs to be prohibited.