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Journal of Clinical Microbiology, January 2008, p. 321-324, Vol. 46, No. 1
0095-1137/08/$08.00+0 doi:10.1128/JCM.02097-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.
Optochin Resistance among Streptococcus pneumoniae Strains Colonizing Healthy Children in Portugal
Sónia Nunes,1
Raquel Sá-Leão,1* and
Hermínia de Lencastre1,2
Laboratory of Molecular Genetics, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras, Portugal,1
Laboratory of Microbiology, The Rockefeller University, New York, New York2
Received 30 October 2007/
Accepted 5 November 2007
Two percent of 1,973 pneumococcus strains isolated from carriers since 2001 in Portugal were found to be optochin resistant. These strains belonged to eight serotypes (and some were nontypeable), and they had diverse genetic backgrounds. Novel optochin-resistant lineages were detected over time, suggesting that there was a continuous, although sporadic, emergence of optochin resistance.
* Corresponding author. Mailing address: Laboratory of Molecular Genetics, Instituto de Tecnologia Química e Biológica, Rua da Quinta Grande, 6, Oeiras, 2780-156 Oeiras, Portugal. Phone: 351 21 4469872. Fax: 351 21 4428766. E-mail: rsaleao{at}itqb.unl.pt
Published ahead of print on 21 November 2007.
Journal of Clinical Microbiology, January 2008, p. 321-324, Vol. 46, No. 1
0095-1137/08/$08.00+0 doi:10.1128/JCM.02097-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.
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