Epidemiological characteristics of nasopharyngeal Streptococcus pneumoniae strains among children with pneumonia in Chongqing, China.

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ID: 12114
2019
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Abstract
Streptococcus pneumoniae (pneumococcus) is the most common respiratory pathogen worldwide. Nasopharyngeal carriage with S. pneumoniae is the major source of lower respiratory tract infection and horizontal spread among children. Investigating nasopharyngeal S. pneumoniae is crucial for clinicians to control pneumococcus disease. Here, we retrospectively analyzed clinical information of 5,960 hospitalized children, focusing on pneumonia children less than five years with positive nasopharyngeal pneumococcal cultures. Nasopharyngeal aspirates (NPAs) were collected between June 2009 and December 2016, which were outside the pneumococcal conjugate vaccine(PCV) period. NPAs were subjected to common bacterial culture and antibiotic susceptibility tests, and serotypes were identified by both multiplex PCR and DNA sequencing. Results clearly revealed that clinical manifestations of the children whose NPAs were S. pneumoniae culture positive were serious, especially in those less than twelve months old. Fifteen different serotypes of nasopharyngeal S. pneumoniae were detected, the most common ones being 19F (35.2%), 6A/B (23.8%), 19A (11.4%), 15B/C (9.3%) and 23F (7.8%). Eight serotypes, accounting for 85.5% of the isolates, corresponded to the PCV13 serotypes. Approximately one-third of all S. pneumoniae strains were susceptible to penicillin. Overall, we consider nasopharyngeal S. pneumoniae culture is beneficial in assessing the situations of pneumonia children. Moreover, PCV13 could be useful in preventing pneumococcal disease in Chongqing, China.
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yu2019epidemiologicalscientific Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Yu, Yi-Yi;Xie, Xiao-Hong;Ren, Luo;Deng, Yu;Gao, Yu;Zhang, Yao;Li, Hui;Luo, Jian;Luo, Zheng-Xiu;Liu, En-Mei;
Journal Scientific reports
Year 2019
DOI
10.1038/s41598-019-40088-6
URL
http://link.springer.com/article/10.1038/s41598-019-40088-6
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