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<article article-type="research-article" dtd-version="1.0" xml:lang="en"
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    <front>
        <journal-meta>
            <journal-id journal-id-type="issn">0973-7510</journal-id>
            <journal-title-group>
                <journal-title>Journal of Pure and Applied Microbiology</journal-title>
            </journal-title-group>
            <issn pub-type="epub">2581-690X</issn>
            <publisher>
                <publisher-name>DR. M.N. Khan</publisher-name>
            </publisher>
        </journal-meta>
        <article-meta>
            <article-id pub-id-type="doi">10.22207/JPAM.19.4.18</article-id>
            <title-group>
                <article-title>Diversity and Molecular Characterization of Shiga Toxin-producing Escherichia coli Isolated from Ground Beef at Point of Sale in Hidalgo, Mexico</article-title>
            </title-group>
            <contrib-group>

				<contrib contrib-type="author">
                    <name>
                        <surname>Cordero-Lopez</surname>
                        <given-names>Ana Paola</given-names>
                    </name>
                    <xref ref-type="aff" rid="aff-1"/>
                </contrib>

				<contrib contrib-type="author">
                    <name>
                        <surname>Vega-Sanchez</surname>
                        <given-names>Vicente</given-names>
                    </name>
                    <xref ref-type="aff" rid="aff-1"/>
                </contrib>

				<contrib contrib-type="author">
                    <name>
                        <surname>Reyes-Rodriguez</surname>
                        <given-names>Nydia Edith</given-names>
                    </name>
                    <xref ref-type="aff" rid="aff-1"/>
                </contrib>

				<contrib contrib-type="author">
                    <name>
                        <surname>Gomez-De Anda</surname>
                        <given-names>Fabian Ricardo</given-names>
                    </name>
                    <xref ref-type="aff" rid="aff-1"/>
                </contrib>

				<contrib contrib-type="author">
                    <name>
                        <surname>Olave-Leyva</surname>
                        <given-names>Jose Ignacio</given-names>
                    </name>
                    <xref ref-type="aff" rid="aff-1"/>
                </contrib>

				<contrib contrib-type="author">
                    <name>
                        <surname>Martinez-Juarez</surname>
                        <given-names>Victor Manuel</given-names>
                    </name>
                    <xref ref-type="aff" rid="aff-1"/>
                </contrib>
				
			</contrib-group>


          <aff id="aff-1">Academic Area of Veterinary Medicine, Institute of Agricultural Sciences, Autonomous University of the State of Hidalgo, San Miguel Huatengo, Postal Code 43775, Santiago Tulantepec de Lugo Guerrero, Hidalgo, Mexico.</aff>



            <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2025-11-03">
                <day>03</day>
				<month>11</month>
                <year>2025</year>
            </pub-date>
            <volume>19</volume>
            <issue>4</issue>
            <fpage>2796</fpage>
            <lpage>2803</lpage>
            <permissions>
                <copyright-statement>Copyright &#x00A9; 2025 The Author(s)</copyright-statement>
                <copyright-year>2025</copyright-year>
                <license license-type="open-access"
                    xlink:href="https://creativecommons.org/licenses/by/4.0/">
                    <license-p>This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.<uri
					xlink:href="https://creativecommons.org/licenses/by/4.0/"
                            >https://creativecommons.org/licenses/by/4.0/</uri></license-p>
                </license>
            </permissions>
            <self-uri xlink:href="https://microbiologyjournal.org/diversity-and-molecular-characterization-of-shiga-toxin-producing-escherichia-coli-isolated-from-ground-beef-at-point-of-sale-in-hidalgo-mexico/"/>
            <abstract>
                <p>Shiga toxin-producing Escherichia coli (STEC) is the causative agent of several epidemic outbreaks worldwide. STEC infections range from mild diarrhea to fatal outcomes, transmission occurs mainly through the ingestion of contaminated and undercooked meat. The objective of the present study was to identify STEC strains in ground beef samples and characterize virulence genes associated with a public health risk. Thirteen E. coli strains were analyzed from 10 ground beef samples collected in Hidalgo, Mexico. The stx1, stx2, eaeA and hlyA genes were detected by multiplex PCR, and Enterobacterial Repetitive Intergenic Consensus (ERIC) sequences of were amplified by endpoint PCR. Of the 13 strains analyzed, 11 (84.61%) carried the stx1 and stx2 genes, while 6 strains (46.15%) also harbored the eaeA gene; none carried the hlyA gene. Analysis of ERIC-PCR banding patterns revealed clustering of isolates at 50% genetic similarity, in addition thirteen distinct genetic profiles were identified, with no evidence of clonality among the samples. This study confirms the contamination of ground beef with STEC, demonstrating high genetic diversity and the presence of key virulence genes (stx1, stx2 and eaeA). The characteristics of the isolates highlight their zoonotic potential and underscore the role of ground beef as a significant vehicle for foodborne illness.</p>
		</abstract>
		<kwd-group>
        <title>Keywords</title>
        <kwd>STEC</kwd>
        <kwd>Ground Beef</kwd>
        <kwd>Virulence Genes</kwd>
        <kwd>ERIC</kwd>
		</kwd-group>
</article-meta>
</front>
</article>
