Author:
Guo Qiong,Li Lili,Wang Chao,Huang Yiman,Ma Fenlian,Cong Shanshan,Tan Jingjing,Yao Lihong,Chen Aijun,Zheng Lishu
Abstract
Abstract
Background
Among hospitalized children suffering from community-acquired pneumonia, Mycoplasma pneumoniae (MP) is one of the most common pathogens. MP often exists as a co-infection with bacteria or viruses, which can exacerbate the clinical symptoms. We investigated the pathogen spectrum in MP-positive and MP-negative samples from hospitalized children with respiratory tract infections in Beijing, China.
Method
This study included 1038 samples of nasopharyngeal aspirates obtained between April, 2017 and March, 2018 from hospitalized children under 6 years of age with respiratory tract infections. To explore the impact of MP infection on the composition of the pathogen spectrum, 185 nasopharyngeal aspirates (83 MP-positive/102 MP-negative) were randomly selected for next-generation sequencing and comprehensive metagenomics analysis. Real-time PCR was used to detect and verify common respiratory viruses.
Results
Of the 1038 samples, 454 (43.7%) were infected with MP. In children < 6 years of age, the MP infection rate gradually increased with age, with the highest rate of 74.2% in 5–6-year-olds. The results of metagenomics analysis revealed 11 human, animal and plant virus families, and bacteriophages, including common respiratory viruses, enteroviruses and anelloviruses. The virus family with the highest number of reads in both MP-positive and MP-negative samples was the Pneumoviridae, and the number of reads for human respiratory syncytial virus (HRSV) in MP-positive samples was higher than that in MP-negative samples. Among the 83 MP-positive samples, 47 (56.63%) were co-infected with viruses, the most common of which was influenza virus (IFV). The durations of hospitalization and fever were higher in patients with MP co-infection than MP single infection, but the difference was not statistically significant.
Conclusion
The viral family with the highest number of reads in both groups was Pneumoviridae, and the number of reads matched to HRSV in MP-positive samples was much higher than MP-negative samples. Co-infection of MP and IFV infection were the most cases.
Funder
the Key Technologies R&D Program of the National Ministry of Science, China
Publisher
Springer Science and Business Media LLC
Subject
Infectious Diseases,Virology
Reference37 articles.
1. Waites KB, Xiao L, Liu Y, Balish MF, Atkinson TP. Mycoplasma pneumoniae from the respiratory tract and beyond. Clin Microbiol Rev. 2017;30(3):747–809.
2. Liu J, Wang M, Zhao Z, Lin X, Zhang P, Yue Q, et al. Viral and bacterial coinfection among hospitalized children with respiratory tract infections. Am J Infect Control. 2020;48(10):1231–6.
3. Lee KL, Lee CM, Yang TL, Yen TY, Chang LY, Chen JM, et al. Severe Mycoplasma pneumoniae pneumonia requiring intensive care in children, 2010–2019. J Formos Med Assoc. 2021;120(1 Pt 1):281–91.
4. Khoury T, Sviri S, Rmeileh AA, Nubani A, Abutbul A, Hoss S, et al. Increased rates of intensive care unit admission in patients with Mycoplasma pneumoniae: a retrospective study. Clin Microbiol Infect. 2016;22(8):711–4.
5. Kutty PK, Jain S, Taylor TH, Bramley AM, Diaz MH, Ampofo K, et al. Mycoplasma pneumoniae among children hospitalized with community-acquired pneumonia. Clin Infect Dis. 2019;68(1):5–12.