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Because the cervical cancer vaccine developed and marketed does not cover all high-risk types, vaccination with nine-valent HPV vaccine cannot protect all diseases caused by related tumors or high/low-risk types; Therefore, the US FDA approved the listing of nine-valent HPV vaccine instructions, and clarified the following nine restrictions:
Vaccination with this vaccine cannot cancel/terminate the long-term continuous cervical cancer screening for women (secondary preventive measures). Vaccination cannot cancel/terminate the recommended screening in anal cancer. This vaccine can't protect people infected with human papillomavirus. This vaccine can not protect other types of related diseases other than the corresponding type.
Refer to the above content: Baidu Encyclopedia-Nine-valent HPV Vaccine