Safety Study of 15-Valent Pneumococcal Conjugate Vaccine in Healthy Volunteers Aged Above 2 Months

Inclusion Criteria: * 2 months old (at a minimum of 6 weeks old) and above healthy people. * Subject or legal representative who consent and has signed written informed consent. * Subject and parent/guardian who is able to comply with all study procedures and to use thermometer, scale and fill in diary card and contact card as required. * Subject who didn't vaccinate 13-valent or 7-valent pneumococcal conjugate vaccine. * Subject who did't immune with any live vaccine within 14 days and inactivated vaccine within 7 days before vaccination. * Axillary temperature ≤37.0 ℃. Exclusion Criteria: * Subject with a history of a prior bacterial culture of an aggressive disease caused by S. pneumoniae. * Subject with any previous history of severe vaccination or drug allergy, occurrence of fever ≥ 39.0° related to vaccination of biological products for previous vaccination. * Subject who are allergic to diphtheria toxins. * Children below 1 year old with abnormal labor（dystocia, instrument midwifery), birth weight \<2500g, asphyxia rescue history, nerve organ damage history, and pathological history of yellow plague determined by diagnosis. * History of allergy，eclampsia, epilepsy,brain trauma,encephalopathy and mental disease or family disease. * Subject who diagnosis of thrombocytopenia or other history of coagulopathy. * Known severe congenital malformations, developmental disorders; clinically diagnosed serious chronic diseases: down's syndrome, diabetes, sickle cell anemia or neurological disorders, Guillain Barre syndrome. * Known or suspected to suffer from: severe cardiovascular disease, liver and kidney disease, malignant tumor, skin disease, serious respiratory system disease, acute infection or chronic disease active period. * Known or suspected to suffer from immunological abnormalities, including immunosuppressive therapy (radiotherapy, chemotherapy, corticosteroids, antimetabolic drugs, cytotoxicity drugs), HIV infection, etc. * Received blood products or immunoglobulin within 3 months before enrolling (hepatitis B immunoglobulin was acceptable), or planned to use it during the clinical trial period (before blood samples were collected after immunization). * Subject who plan to participate in or is in any other clinical trial (vaccines, drugs, medical devices, etc.). * In pregnancy or lactation or pregnant women. * ≥18-year-old subject with blood routine, blood chemistry or urinalysis laboratory collection abnormalities. * Any condition that, in the judgment of investigator, may affect trial assessment.