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                <text>Coronavirus</text>
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                <text>Dominio científico: Coronavirus</text>
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          <name>Title</name>
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              <text>Comparative genomic profiling of Dutch clinical &lt;it&gt;Bordetella pertussis &lt;/it&gt;isolates using DNA microarrays: Identification of genes absent from epidemic strains</text>
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              <text>van Gent Marjolein, Heuvelman Kees, Diavatopoulos Dimitri, HE Qiushui, van der Heide Han GJ, Pennings Jeroen LA, van Gorkom Tamara, King Audrey J, van Leeuwen Karin, Mooi Frits R</text>
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          <name>Description</name>
          <description>An account of the resource</description>
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              <text>Abstract Background Whooping cough caused by Bordetella pertussis in humans, is re-emerging in many countries despite vaccination. Several studies have shown that significant shifts have occurred in the B. pertussis population resulting in antigenic divergence between vaccine strains and circulating strains and suggesting pathogen adaptation. In the Netherlands, the resurgence of pertussis is associated with the rise of B. pertussis strains with an altered promoter region for pertussis toxin (ptxP3). Results We used Multi-Locus Sequence Typing (MLST), Multiple-Locus Variable Number of Tandem Repeat Analysis (MLVA) and microarray-based comparative genomic hybridization (CGH) to characterize the ptxP3 strains associated with the Dutch epidemic. For CGH analysis, we developed an oligonucleotide (70-mers) microarray consisting of 3,581 oligonucleotides representing 94% of the gene repertoire of the B. pertussis strain Tohama I. Nine different MLST profiles and 38 different MLVA types were found in the period 1993 to 2004. Forty-three Dutch clinical isolates were analyzed with CGH, 98 genes were found to be absent in at least one of the B. pertussis strains tested, these genes were clustered in 8 distinct regions of difference. Conclusion The presented MLST, MLVA and CGH-analysis identified distinctive characteristics of ptxP3 B. pertussis strains -the most prominent of which was a genomic deletion removing about 23,000 bp. We propose a model for the emergence of ptxP3 strains.</text>
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              <text>2008</text>
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              <text>DOI: 10.1186/1471-2164-9-311</text>
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              <text>BMC Genomics</text>
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          <name>Publisher</name>
          <description>An entity responsible for making the resource available</description>
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            <elementText elementTextId="10279">
              <text>BMC</text>
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          <description>The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant</description>
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              <text>Genetics, Biotechnology</text>
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              <text>EN</text>
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