<?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>0300-9041</journal-id>
<journal-title><![CDATA[Ginecología y obstetricia de México]]></journal-title>
<abbrev-journal-title><![CDATA[Ginecol. obstet. Méx.]]></abbrev-journal-title>
<issn>0300-9041</issn>
<publisher>
<publisher-name><![CDATA[Federación Mexicana de Colegios de Obstetricia y Ginecología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0300-90412024000500189</article-id>
<article-id pub-id-type="doi">10.24245/gom.v92i5.9201</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Identificación de la proteína &#8220;Spike&#8221; en sangre de cordón umbilical de recién nacidos de madres vacunadas contra SARS-CoV-2 durante el embarazo]]></article-title>
<article-title xml:lang="en"><![CDATA[Identification of the &#8220;Spike&#8221; protein in umbilical cord blood of newborns from mothers vaccinated against SARS-CoV-2 during pregnancy.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Malfavón Farías]]></surname>
<given-names><![CDATA[Montserrat]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez Camacho]]></surname>
<given-names><![CDATA[Eric Emilio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Borboa-Olivares]]></surname>
<given-names><![CDATA[Héctor Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flores Manzur]]></surname>
<given-names><![CDATA[María de los Ángeles]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santiago Sanabria]]></surname>
<given-names><![CDATA[Leopoldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Médico ABC  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Médico ABC  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<volume>92</volume>
<numero>5</numero>
<fpage>189</fpage>
<lpage>197</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0300-90412024000500189&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0300-90412024000500189&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0300-90412024000500189&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  OBJETIVO: Identificar la coexistencia de anticuerpos contra la proteína &#8220;Spike&#8221; del SARS-CoV-2 en sangre del cordón umbilical de recién nacidos de madres vacunadas contra la COVID-19 durante el embarazo.  MATERIALES Y MÉTODOS:  Estudio transversal, llevado a cabo en un centro de atención privada de la Ciudad de México, entre junio del 2021 y febrero del 2022, al que se incluyeron mujeres que completaron el esquema de vacunación contra SARS-CoV-2 durante el embarazo y en quienes en el trascurso de la finalización del embarazo parto o cesárea se haya obtenido una muestra de sangre de cordón umbilical para identificar la proteína Spike.  RESULTADOS: Se registraron 219 pacientes y se analizaron 5 tipos de vacuna de dos plataformas diferentes; Pfizer®, Moderna®, AstraZeneca®, J&amp;J/Janssen® y Sputnik®. La concentración de anticuerpos fue mayor en pacientes vacunadas con Moderna® y Sputnik®. Mediante el análisis de regresión de Cox se evaluó un modelo predictivo, sin mostrar diferencia estadísticamente significativa en la cantidad de anticuerpos generados luego de la primera y segunda dosis de la vacuna.  CONCLUSIONES: La vacunación prenatal contra la COVID-19 induce una fuerte respuesta humoral materna, que se transfiere de manera efectiva al feto, incluso con una sola dosis.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  OBJECTIVE: Identification of the presence of SARS-CoV-2 Spike protein antibodies in cord blood of newborns following maternal COVID-19 vaccination during pregnancy.  MATERIALS AND METHODS:  Cross-sectional study in vaccinated women during pregnancy who had a cord blood sample taken during the surgical procedure Vaginal birth/Cesarean section to measure spike protein antibodies.  RESULTS:  We registered 219 patients in the study: five types of vaccines, from two different platforms, were tested: Pfizer®, Moderna®, AstraZeneca®, J&amp;J/Janssen® and Sputnik®. The levels of antibodies were greater in those patients vaccinated with Moderna® and Sputnik®. Through a Cox regression we made a predictive model where we observed that there are no differences in the number of antibodies generated after the first and second vaccine dose.  CONCLUSIONS:  Prenatal vaccination against COVID-19 induces a strong maternal humoral response that is effectively transferred to the fetus, even with a single dose.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[embarazo]]></kwd>
<kwd lng="es"><![CDATA[proteína Spike]]></kwd>
<kwd lng="es"><![CDATA[inmunidad pasiva]]></kwd>
<kwd lng="es"><![CDATA[vacunación]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[Pregnancy]]></kwd>
<kwd lng="en"><![CDATA[Spike protein]]></kwd>
<kwd lng="en"><![CDATA[Passive immunity]]></kwd>
<kwd lng="en"><![CDATA[Vaccination]]></kwd>
</kwd-group>
</article-meta>
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