Prevalence of pilus-encoding islets among acute otitis media Streptococcus pneumoniae isolates from Israel

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Abstract

We evaluated the distribution of the two known Streptococcus pneumoniae pilus encoding islets (PI-1 and PI-2) among a panel of 113 acute otitis media clinical isolates from Israel. PI-1 was present in 30.1% (n = 34) of the isolates tested, and PI-2 was present in 7% (n = 8). In addition, we found that: (i) the PI positive isolates, 50% of which belong to the international clones Spain9V-3 (ST156) and Taiwan19F-14 (ST236), correlate with the genotype (as determined by multilocus sequence typing) but not with the serotype; (ii) PI-2 was not present in the absence of Pl-1; and (iii) the frequency of PI-1 was higher among antibiotic-resistant isolates. © 2010 The Authors. Journal Compilation © 2010 European Society of Clinical Microbiology and Infectious Diseases.

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Moschioni, M., De Angelis, G., Melchiorre, S., Masignani, V., Leibovitz, E., Barocchi, M. A., & Dagan, R. (2010). Prevalence of pilus-encoding islets among acute otitis media Streptococcus pneumoniae isolates from Israel. Clinical Microbiology and Infection, 16(9), 1501–1504. https://doi.org/10.1111/j.1469-0691.2010.03105.x

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