A Clinical Trial of ACYW135 Group Meningococcal Polysaccharide Conjugate Vaccine (CRM197 Vector) in 7 to 17 Year Olds

Inclusion Criteria: * 7\~17 years old at the time of screening * Volunteers and their legal guardians or delegates have given informed consent, have voluntarily signed an informed consent form, are able and willing to comply with the requirements of the clinical trial protocol, and are able to complete 180 days of study follow-up * Willingness to discuss medical history with the investigator or physician and to allow access to all medical records related to this trial Exclusion Criteria: * Fever on the day of vaccination, axillary temperature \>37.0°C * Have a moderate or severe acute illness/infection * Positive urine pregnancy test for females of childbearing age, or plan to become pregnant within 30 days after vaccination * Current meningitis or history of meningitis * Allergy to certain components or excipients of the drugs used in this clinical trial (mainly including: group A meningococcal podoplanoside, group C meningococcal podoplanoside, group Y meningococcal podoplanoside, group W135 meningococcal podoplanoside, sucrose, mannitol, sodium chloride, dipotassium hydrogen phosphate trihydrate, potassium dihydrogen phosphate) * History of epilepsy, convulsions or seizures or history or family history of psychiatric disorders * Previous severe allergic reactions due to drugs or vaccines * Bleeding constitution or condition associated with prolonged bleeding, which in the opinion of the investigator makes intramuscular injection contraindicated * Any meningococcal vacci…