<?xml version="1.0" encoding="ISO-8859-1"?><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>1729-519X</journal-id>
<journal-title><![CDATA[Revista Habanera de Ciencias Médicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev haban cienc méd]]></abbrev-journal-title>
<issn>1729-519X</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Médicas de la Habana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1729-519X2021000200009</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Factores de riesgo asociados a colonización nasofaríngea en niños vacunados con vacunas antineumocócicas. Cienfuegos 2015-16]]></article-title>
<article-title xml:lang="en"><![CDATA[Risk factors associated with nasopharyngeal colonization in children vaccinated with pneumococcal vaccines. Cienfuegos, 2015-16.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chavez Amaro]]></surname>
<given-names><![CDATA[Dunia María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Casanova González]]></surname>
<given-names><![CDATA[María Felicia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Linares Pérez]]></surname>
<given-names><![CDATA[Nivaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Toledo Romaní]]></surname>
<given-names><![CDATA[María Eugenia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Capote Padrón]]></surname>
<given-names><![CDATA[Jorge Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Ciencias Médicas de Cienfuegos  ]]></institution>
<addr-line><![CDATA[Cienfuegos ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Pediátrico Universitario &#8220;Paquito González Cueto&#8221;  ]]></institution>
<addr-line><![CDATA[Cienfuegos ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Finlay de Vacunas  ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto de Medicina Tropical &#8220;Pedro Kourí&#8221;  ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2021</year>
</pub-date>
<volume>20</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1729-519X2021000200009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1729-519X2021000200009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1729-519X2021000200009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La colonización nasofaríngea por neumococo se define como el momento inicial en el que la bacteria se aloja en la nasofaringe del individuo.  Objetivo:  Estimar la proporción de factores de riesgo asociados a la colonización nasofaríngea por neumococo en niños vacunados con vacunas conjugadas antineumocócicas (PCV).  Material y Métodos:  Un año después de la vacunación antineumócocica mediante un ensayo clínico fase II/III, controlado, aleatorizado y doble ciego en niños de 1 a 5 años, se ejecutó un estudio de seguimiento con un diseño casos y controles, tipo caso-caso. El horizonte temporal fue desde noviembre de 2015 hasta abril de 2016. Se incluyó 50 % del total de vacunados en el estudio experimental. El universo lo constituyó los 1 135 niños vacunados en el ensayo clínico. Se siguió un muestreo aleatorio simple y se incluyeron 555 sujetos. Se realizó una encuesta y una toma de muestra de exudado nasofaríngeo. Se presentaron tablas de frecuencias. Se utilizó la razón de prevalencia como medida de asociación. Se calcularon los intervalos de confianza a 95 % para cada proporción.  Resultados:  Tener entre 2 y 5 años actúa como factor protector para la colonización nasofaríngea con respecto al niño pequeño. Convivir con personas mayores de 65 años constituye un factor de riesgo significativamente relacionado con la colonización nasofaríngea.  Conclusiones:  La introducción de vacunas antineumocócicas en niños preescolares puede impactar de manera significativa la carga de colonización y en la trasmisión de la enfermedad neumocócica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: Nasopharyngeal colonization by pneumococci is defined as the initial moment when the bacterium lodges in the nasopharynx of the person.  Objective: To estimate the proportion of risk factors associated with nasopharyngeal colonization by pneumococci in children vaccinated with conjugate pneumococcal vaccines (CPV).  Material and Methods:  One year after pneumococcal vaccination, a follow-up case-case-control study was conducted in children aged 1-5 years by means of a phase II/III controlled, randomized, double-blind clinical trial. The time horizon was from November 2015 to April 2016. The study included 50 % of the total of children vaccinated during the experimental study. The universe consisted of 1135 children who were vaccinated during the clinical trial. A simple random sampling that included 555 persons was applied. A survey was conducted and nasopharyngeal exudate samples were taken. Tables of frequencies were presented. Prevalence ratio was used as a measure of association. Also, 95 % confidence intervals were calculated for each proportion.  Results: Being between the ages of 2-5 years acts as protective factor against nasopharyngeal colonization with respect to the young child. Living with persons older than 65 years is a significantly associated risk factor with nasopharyngeal colonization.  Conclusions:  The introduction of pneumococcal vaccines in pre-school children can have a significant impact on colonization burden and the transmission of pneumococcal diseases.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Streptococcus pneumoniae]]></kwd>
<kwd lng="es"><![CDATA[factores de riesgo]]></kwd>
<kwd lng="es"><![CDATA[colonización nasofaríngea]]></kwd>
<kwd lng="es"><![CDATA[vacunas conjugadas antineumocócicas]]></kwd>
<kwd lng="en"><![CDATA[Streptococcus pneumoniae]]></kwd>
<kwd lng="en"><![CDATA[risk factors]]></kwd>
<kwd lng="en"><![CDATA[nasopharyngeal colonization]]></kwd>
<kwd lng="en"><![CDATA[conjugate pneumococcal vaccines]]></kwd>
</kwd-group>
</article-meta>
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