<?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>1561-3003</journal-id>
<journal-title><![CDATA[Revista Cubana de Higiene y Epidemiología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cubana Hig Epidemiol]]></abbrev-journal-title>
<issn>1561-3003</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Información de Ciencias MédicasEditorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1561-30032021000100017</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Vacunas de la infancia podrían estar contribuyendo a menor incidencia y severidad de COVID-19 en edades pediátricas]]></article-title>
<article-title xml:lang="en"><![CDATA[Childhood vaccines could be contributing to a lower incidence and severity in pediatric COVID-19]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fonte Galindo]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ginori Gilkes]]></surname>
<given-names><![CDATA[María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García Menéndez]]></surname>
<given-names><![CDATA[Gissel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Medicina Tropical &#8220;Pedro Kourí&#8221; (IPK)  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Policlínico Universitario &#8220;Plaza de La Revolución&#8221;  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Clinicoquirúrgico &#8220;Hermanos Ameijeiras&#8221;  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>58</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1561-30032021000100017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1561-30032021000100017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1561-30032021000100017&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN A más de un año de que la pandemia de COVID-19 emergiera en la ciudad China de Wuhan, un hecho sigue llamando la atención de la comunidad científica enfrentada a esta virosis: la menor susceptibilidad de los niños a la infección por SARS CoV-2 y al desarrollo de cuadros severos de COVID-19. Un grupo de factores, no excluyentes, ha sido aludido para explicar la mayor resistencia de los menores a la virosis y a sus consecuencias clínicas. El objetivo de este trabajo es incursionar en un factor adicional, todavía poco abordado en la literatura médica relacionada con el tema: la resistencia inespecífica a SARS-CoV-2 que podría estar siendo generada por las vacunas administradas durante la infancia. Con esta incursión se pretende, además, aportar a una mejor comprensión del carácter relativamente benévolo de la virosis en los menores. El análisis realizado permite concluir que un grupo de las vacunas administradas durante esa etapa, la mayoría de las cuales forman parte del esquema de inmunización de los niños cubanos, se asocia a una menor incidencia y severidad de la infección por SARS CoV-2 en edades pediátricas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT More than one year after the emergence of COVID-19 in the Chinese city of Wuhan, a fact continues to draw the attention of the scientific community engaged in the response to the virus: the lower susceptibility of children to SARS-CoV-2 infection and to the development of severe COVID-19. A number of non-mutually exclusive factors have been mentioned to explain the higher resistance of minors to the virus and its clinical consequences. The purpose of the study was to address an additional factor, so far not much dealt with in the medical bibliography about the topic: unspecific resistance to SARS-CoV-2 could be the result of the vaccines administered during childhood. This analysis is also aimed at contributing a better understanding of the relatively benevolent nature of the virus among children. It is concluded that a number of vaccines administered in childhood, most of them included in the immunization scheme for Cuban children, are associated to a lower incidence and severity of SARS-CoV-2 infection in pediatric ages.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[SARS CoV-2]]></kwd>
<kwd lng="es"><![CDATA[vacunación]]></kwd>
<kwd lng="es"><![CDATA[niños]]></kwd>
<kwd lng="es"><![CDATA[susceptibilidad a enfermedades]]></kwd>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[vaccination]]></kwd>
<kwd lng="en"><![CDATA[children]]></kwd>
<kwd lng="en"><![CDATA[susceptibility to disease]]></kwd>
</kwd-group>
</article-meta>
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