<?xml version="1.0" encoding="iso-8859-1" ?>
<articles>
<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id pub-id-type="pid">S1017-854620040002</journal-id>
<journal-title>Revista Médica del Hospital Nacional de Niños Dr. Carlos Sáenz Herrera</journal-title>
<abbrev-journal-title>Rev. méd. Hosp. Nac. Niños (Costa Rica)</abbrev-journal-title>
<issn>1017-8546</issn>
<publisher>
<publisher-name>Editorial Nacional de Salud y Seguridad Social</publisher-name>
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<article-id>S1017-85462004000200001</article-id>
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<institution>,Caja Costarricense de Seguro Social Hospital Monseñor Sanabria Banco de Sangre</institution>
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<year>2004</year>
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<year>2004</year>
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<volume>39</volume>
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<copyright-statement/>
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<front>
<journal-meta>
<journal-id pub-id-type="pid">S1017-854620040002</journal-id>
<journal-title>Revista Médica del Hospital Nacional de Niños Dr. Carlos Sáenz Herrera</journal-title>
<abbrev-journal-title>Rev. méd. Hosp. Nac. Niños (Costa Rica)</abbrev-journal-title>
<issn>1017-8546</issn>
<publisher>
<publisher-name>Editorial Nacional de Salud y Seguridad Social</publisher-name>
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<article-id>S1017-85462004000200002</article-id>
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<article-title xml:lang="es">Portadores pediátricos asintomáticos de Enterobacteriaceae con resistencia a la ciprofloxacina</article-title>
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<surname>Herrera</surname>
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<year>2004</year>
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<pub-date pub-type="epub">
<year>2004</year>
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<volume>39</volume>
<fpage>17</fpage>
<lpage>24</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http:/www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1017-85462004000200002&amp;lng=en&amp;nrm=iso&amp;tlng=en"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1017-85462004000200002&amp;lng=en&amp;nrm=iso&amp;tlng=en"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1017-85462004000200002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p>Se estudiaron 100 niños costarricenses sanos, por la presencia en su material fecal de integrantes de la familia Enterobacteriaceae con resistencia a la ciprofloxacina. En 145 cepas estudiadas, se encontraron 6 cepas ciprofloxacino resistentes (4,13%), 5 correspondientes a Escherichia coli y una cepa de Proteus mirabilis, todas con CMI entre 8 y 32 ug/ml. No se encontró ningún factor de riesgo que ayudara a explicar como se adquirió la resistencia a la ciprofloxacina y tampoco se pudo determinar ninguna asociación con sexo, edad, o procedencia con dicha resistencia</p></abstract>
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<front>
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<journal-id pub-id-type="pid">S1017-854620040002</journal-id>
<journal-title>Revista Médica del Hospital Nacional de Niños Dr. Carlos Sáenz Herrera</journal-title>
<abbrev-journal-title>Rev. méd. Hosp. Nac. Niños (Costa Rica)</abbrev-journal-title>
<issn>1017-8546</issn>
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<self-uri xlink:href="http:/www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1017-85462004000200003&amp;lng=en&amp;nrm=iso&amp;tlng=en"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1017-85462004000200003&amp;lng=en&amp;nrm=iso&amp;tlng=en"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1017-85462004000200003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p>Se analizaron las muestras de 3933 pacientes a los que se les solicitó determinación de anticuerpos contra el Virus Epstein Barr en el Hospital Nacional de Niños &quot;Dr. Carlos Sáenz Herrera&quot; en San José de Costa Rica (EBV). Se evalúa el comportamiento de los diferentes anticuerpos según sexo y se determina el porcentaje de pacientes en las diferentes etapas de infección. Se concluye que un 25% de los niños a los que se les solicita este análisis, se encuentran en la infección activa y que alrededor del 50% de los pacientes estudiados, presentan perfil serológico de infección pasada por este agente. El restante 25% de los resultados representan otros estadios de la infección por EBV</p></abstract>
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