Objective:To analyze the prevalence of IgM antibodies of 9 respiratory pathogens in Baoshan district, Shanghai. Methods: A total of 1 713 serum samples ofrespiratory infection patients in 2017 were collected. The IgM antibodies of 9 pathogens (legionella pneumophila serotype 1, mycoplasma pneumoniae, coxiella burnetii, chlamydia pneumoniae, adenovirus, respiratory syncytial virus, influenza A virus, influenza B virus and parainfluenza virus type 1, 2 and 3) were analyzed by indirect immunofluorescence assay. The prevalence of 9 respiratory pathogens was analyzed by age, season and gender.Results: 19.61% (336/1 713) patients were positive for at least one of 9 respiratory pathogens. No patients were positive for Coxiella burnetii or influenza A virus. Among these 336 positive patients, 262(15.29%) cases were positive for single pathogen infection, while 74(4.32%) cases were infected by mixed pathogens, which mainly due to mycoplasma pneumoniae combined with other pathogens. Mycoplasma pneumoniae, parainfluenza virus(type 1, 2, 3) and influenza B virus were top three positive pathogens, with positive rates of 16.64%, 3.44% and 2.16% respectively. The positive rates of 9 pathogens in spring, summer, autumn and winter were 17.15%, 21.05%, 22.31% and 18.85% respectively, indicating no significant difference of positive rate among seasons. The positive rate was 38.49%, 15.07% and 8.86% in 0-12 years, 13-59 years and over 60 years patients, indicating that 0-12 years patients were the most susceptible population. The positive rate of females(24.30%) was statistically higher than that of males(16.25%).Conclusion: Mycoplasma pneumoniae was the most prevalent pathogen in Baoshan respiratory infections patients. The infection of respiratory pathogens is related to age and sex, indicating the clinical benefit of targeted prevention. The combined detection of 9 respiratory pathogens was a rapid and simple screening method with wide spectrum, which was conducive to the early diagnosis and treatment of atypical pathogens infection. |