期刊
CLINICAL INFECTIOUS DISEASES
卷 40, 期 1, 页码 52-57出版社
OXFORD UNIV PRESS INC
DOI: 10.1086/426446
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Background. Clinical symptoms and signs in acute otitis media ( AOM) may differ depending on the various pneumococcal serotypes causing the disease. Alteration in clinical presentation of AOM could be expected after wide- scale pneumococcal vaccinations if there were considerable differences between vaccine serotypes and nonvaccine serotypes. Methods. In this study, data from 831 children in the control arm of the Finnish Otitis Media Vaccine Trial were used. The children were followed up prospectively in 8 study clinics from 2 to 24 months of age. If AOM was diagnosed, myringotomy was done, and middle ear fluid was aspirated for bacterial culture. Clinical symptoms and signs of AOM were routinely recorded on structured case report forms. Results. Consistent with previous studies, 60% of pneumococcal episodes were caused by vaccine serotypes. There were no major differences between the clinical presentations of AOM due to different serotypes or serotype categories. However, earache was more often associated with AOM caused by vaccine and cross- reactive serotypes, compared with AOM caused by non - vaccine- related serotypes ( 42% vs. 29%; odds ratio, 1.66; 95% confidence interval, 1.02 - 2.70). Conclusions. Introduction of the currently available pneumococcal conjugate vaccine is unlikely to result in a remarkable alteration in the clinical presentation of pneumococcal AOM in infants.
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