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首页> 外文期刊>iranian journal of microbiology >Serotype distribution and antimicrobial resistance of Streptococcus pneumoniae among children with acute otitis media in Marrakech, Morocco
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Serotype distribution and antimicrobial resistance of Streptococcus pneumoniae among children with acute otitis media in Marrakech, Morocco

机译：Serotype distribution and antimicrobial resistance of Streptococcus pneumoniae among children with acute otitis media in Marrakech, Morocco

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Background and Objectives: Streptococcus pneumonia (S. pneumoniae) is one of the most frequent pathogens leading to a variety of clinical manifestations. The effects of S. pneumoniae carriage on acute otitis media (AOM) are poorly studied. The study aimed to assess the serotype's distribution and antimicrobial susceptibility in children with AOM after the implementation of the pneumococcal conjugate vaccine (PCV) in Morocco. Materials and Methods: We conducted a prospective study of AOM children aged 6 to 36 months who visited pediatric centers in Marrakesh between January to June 2018. Parents were asked to complete a questionnaire and a swab was collected from each child. The S. pneumoniae strains were further identified (Hemolysis, optochin sensitivity, and agglutination test), serogrouped (IMMULEX PNEUMOTEST agglutination test), serotyped (Real time PCR) and tested for antimicrobial susceptibility. Results: The S. pneumoniae carriage rate was 49.7 (87/175). As estimated, non-vaccine serotypes (NVT) were most prevalent (51/63; 81). The most frequent serotypes were 6C/6D (12.7), 10 (9.5), and 19B/19C (9.5). The S. pneumoniae strains that were isolated showed a diminished susceptibility to penicillin G with a rate of 27.5. Penicillin non-susceptible pneumococci (PNSP) was mostly associated with NVT. More than 90 of S. pneumoniae isolates were susceptible to chloramphenicol (97.5), clindamycin (97.5), erythromycin (97.5), levofloxacin (97.5), pristinamycin (97.5), gentamicin (92.5), and teicoplanin (92.5). Conclusion: Important nasopharyngeal carriage prevalence was reported among children with AOM. The study showed that new NVT are emerging, including 6C/6D and 10. Furthermore, susceptibility was significantly higher against all antibiotics tested except for penicillin G and amoxicillin.

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