Abstract
Objective To analyze the clinical characteristics of Mycoplasma pneumoniae (MP) infection in lower respiratory tract in children so as to provide reference data for the diagnosis of this disease. Methods Clinical data of 83 children with MP infection admitted to the Affiliated Hospital of Zunyi Medical College from January 2017 to December 2017 were retrospectively analyzed. The MP-IgM antibody titer (≥1∶160) was used as the diagnostic criterion for MP infection. The serum MP-IgM level was detected by passive agglutination assay (PPA). And the proportion of different diseases in children with MP infection in lower respiratory tract and the correlation between MP infection in lower respiratory tract and gender, season and age. Results Among 83 children with MP infection, bronchiolitis was found in 1 case (1.20%), with bronchial asthma with pneumonia in 17 cases (20.49%) and bronchial pneumonia in 59 cases (71.08%). There was no significant difference between proportion of males and females (54.22% vs. 45.78%), χ2=1.175, P=0.280. MP infection was not related to gender (P>0.05). The infection rate of MP during October to December (44.58%) was significantly higher than that during January to March (22.89%), July to September (18.07%) and April to June (14.46%), P<0.05. MP infection was seasonally related (P< 0.05). The infection rates of children over 3 years old, 1 to 3 years old and under 1 year old were 45.78%, 34.94% and 19.28%, respectively. The infection rates of children over 1 year old were 80.72%. MP infection was correlated with age (P<0.05). Conclusions In Zunyi area, bronchial pneumonia is the most common type of MP infection in lower respiratory tract. The incidence of MP infection in lower respiratory tract is the highest during October to December. The disease is not related to gender, but related to age, and it is more common in children over 1 year old. Key words: Lower respiratory tract infection; Mycoplasma pneumonia; Clinical features
Published Version
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