Study objectives.

AOM, acute otitis media; B-CAP, likely bacterial community-acquired pneumonia; C-AOM, clinically confirmed acute otitis media; CAP, community-acquired pneumonia; CRP, C-reactive protein; IPD, invasive pneumococcal disease; PHiD-CV, pneumococcal nontypable Haemophilus influenzae protein D conjugate vaccine; SAE, serious adverse event; VT, vaccine serotype.急性中耳炎（acute otitis media，AOM）；疑似细菌性社区获得性肺炎（likely bacterial community-acquired pneumonia，B-CAP）；临床确诊急性中耳炎（clinically confirmed acute otitis media，C-AOM）；社区获得性肺炎（community-acquired pneumonia，CAP）；C反应蛋白（C-reactive protein，CRP）；侵袭性肺炎球菌疾病（invasive pneumococcal disease，IPD）；肺炎球菌非分型流感嗜血杆菌蛋白D结合疫苗（pneumococcal nontypable Haemophilus influenzae protein D conjugate vaccine，PHiD-CV）；严重不良事件（serious adverse event，SAE）；疫苗血清型（vaccine serotype，VT）