Comparison of clinical features and co-infection between pneumonia caused by influenza virus A and pneumonia caused by influenza virus B among children

• Published in: Zhongguo dang dai er ke za zhi Vol. 15; no. 11; p. 990
• Main Authors: Hua, Jun, DU, Xiao-Chen, Li, Ying, Xie, Min-Hui, Zhang, Xue-Lan, Ding, Yun-Fang, Hao, Chuang-Li, Ji, Wei
• Format: Journal Article
• Language: Chinese
• Published: China 01.11.2013
• Subjects: Age of Onset; Child; Child, Preschool; Coinfection - epidemiology; Female; Fever - etiology; Humans; Influenza A virus; Influenza B virus; Influenza, Human - virology; Male; Pneumonia, Viral - virology
• ISSN: 1008-8830
• DOI: 10.7499/j.issn.1008-8830.2013.11.016

To compare the clinical features and co-infection between pneumonia caused by influenza virus A (IVA) and pneumonia caused by influenza virus B (IVB) among children. A total of 165 children with pneumonia caused by influenza virus (IV) were included in the study. These subjects were divided into IVA(n=71) and IVB pneumonia groups (n=94) according to the subtypes of IV. The IVA pneumonia group was further divided into simple infection (n=14) and co-infection subgroups (n=57), and the IVB pneumonia group was also further divided into simple infection (n=27) and co-infection subgroups (n=67). Co-infection rate and pathogen spectrum were analysed in children with IV pneumonia. The IVB pneumonia group had significantly increased mean age of onset and significantly prolonged mean duration of fever compared with the IVA pneumonia group (P<0.05). Co-infection rate among children with IV pneumonia was 75.2%, who were co-infected with bacteria (44.2%), Mycoplasma pneumoniae (MP, 21.8%) and other viruses (45.5%). Respir