<?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>1665-1146</journal-id>
<journal-title><![CDATA[Boletín médico del Hospital Infantil de México]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Med. Hosp. Infant. Mex.]]></abbrev-journal-title>
<issn>1665-1146</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud, Hospital Infantil de México Federico Gómez]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-11462021000100034</article-id>
<article-id pub-id-type="doi">10.24875/bmhim.20000230</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Perinatal COVID-19: a case report, literature review, and proposal of a national system for case record]]></article-title>
<article-title xml:lang="es"><![CDATA[COVID-19 perinatal: reporte de caso, revisión de la literatura y propuesta de un sistema nacional de registro de casos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lima-Rogel]]></surname>
<given-names><![CDATA[Victoria]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villegas-Silva]]></surname>
<given-names><![CDATA[Raúl]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Coronado-Zarco]]></surname>
<given-names><![CDATA[Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Estrada-Ruelas]]></surname>
<given-names><![CDATA[Isaac]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-De la Vega]]></surname>
<given-names><![CDATA[Alma R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muro-Flores]]></surname>
<given-names><![CDATA[Raúl H.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villa-Guillén]]></surname>
<given-names><![CDATA[Mónica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital General Ignacio Morones Prieto Hospital General Ignacio Morones Prieto ]]></institution>
<addr-line><![CDATA[San Luis Potosí ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Infantil de México Federico Gómez Departamento de Neonatología ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Perinatología Isidro Espinosa de los Reyes Departamento de Neonatología ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Federación Nacional de Neonatología de México  ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Hospital de Gineco-Obstetricia, Unidad de Medicina Familiar No. 7, Instituto Mexicano del Seguro Social Coordinación Clínica de Neonatología ]]></institution>
<addr-line><![CDATA[Baja California ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Hospital General Dr. Carlos Canseco Unidad de Cuidados Intensivos Neonatales ]]></institution>
<addr-line><![CDATA[Tamaulipas ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Hospital de Beneficencia Española Departamento de Pediatría ]]></institution>
<addr-line><![CDATA[Tamaulipas ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af8">
<institution><![CDATA[,Hospital General de Zona No. 46 Dr. Bartolomé Reynés Berezaluce, Instituto Mexicano del Seguro Social Unidad de Cuidados Intensivos Neonatales ]]></institution>
<addr-line><![CDATA[Tabasco ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af9">
<institution><![CDATA[,Asociación de Neonatólogos de Tabasco  ]]></institution>
<addr-line><![CDATA[Tabasco ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="A10">
<institution><![CDATA[,Hospital Infantil de México Federico Gómez Dirección Médica ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2021</year>
</pub-date>
<volume>78</volume>
<numero>1</numero>
<fpage>34</fpage>
<lpage>40</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-11462021000100034&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-11462021000100034&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-11462021000100034&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: On March 11, 2020, the World Health Organization declared the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) pandemic, and on February 28, Mexico reported its first case. Internationally, cases in newborns are few and the outcomes, in general, are good. There is no certainty of possible vertical transmission, and the presence of the virus in human milk is improbable. The gold standard for diagnosis is the reverse transcription-polymerase chain reaction (RT-PCR) test. We performed a literature review and presented a case of perinatal COVID-19.  Clinical case: We describe the case of a full-term male infant with a birth weight of 3450 g and history of rooming-in with another mother-baby pair, both positive for SARS-CoV-2. On the second day of life, the neonate developed pneumonia, with clinical, X-ray and ultrasound diagnostic confirmation. On the third day of life, RT-PCR was positive for SARS-CoV-2; the mother was also positive but remained asymptomatic. The patient required mechanical ventilation and was transferred to a tertiary level neonatal unit on day 5 of life, where congenital heart disease was ruled out. He evolved satisfactorily with a negative RT-PCR test for SARS-CoV-2 on day 8 and was extubated and discharged on day 21 of life. Telephone follow-up was performed without complications.  Conclusions: The present case was classified as horizontal transmission with a short incubation period of COVID-19.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: El 11 de marzo de 2020 la Organización Mundial de la Salud declaró la pandemia por SARS-CoV-2 y el 28 de febrero México reportó su primer caso. En todo el mundo, los casos en recién nacidos son pocos y la evolución, en general, es buena. No hay certeza sobre la posible transmisión vertical, y la presencia del virus en la leche humana es altamente improbable. El método de referencia para el diagnóstico es la prueba de reacción en cadena de la polimerasa con transcriptasa inversa (RT-PCR). Se presenta un caso clínico de COVID-19 perinatal y se llevó a cabo una revisión de la literatura sobre el tema.  Caso clínico: Recién nacido de sexo masculino, de término, con un peso al nacer de 3,450 g, con antecedente de alojamiento conjunto con otro binomio madre-hijo positivo para SARS-CoV-2. Al segundo día de vida desarrolló neumonía diagnosticada por clínica, rayos X y ultrasonido. Presentó prueba positiva para SARS-CoV-2 al día 3 de vida, al igual que la madre, quien permaneció asintomática. El paciente requirió ventilación mecánica y fue trasladado a una unidad neonatal de tercer nivel el día 5 de vida, donde se descartó cardiopatía congénita y evolucionó satisfactoriamente. La prueba de RT-PCR para SARS-CoV-2 fue negativa al día 8, por lo que se realizó extubación y egreso al día 21 de vida. Se realizó seguimiento telefónico, sin complicaciones.  Conclusiones: El presente caso fue catalogado como transmisión horizontal con un periodo corto de incubación de COVID-19.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[Severe acute respiratory syndrome coronavirus-2]]></kwd>
<kwd lng="en"><![CDATA[Newborn]]></kwd>
<kwd lng="en"><![CDATA[Case report]]></kwd>
<kwd lng="en"><![CDATA[Literature review]]></kwd>
<kwd lng="en"><![CDATA[Horizontal transmission]]></kwd>
<kwd lng="en"><![CDATA[Database]]></kwd>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[Neonato]]></kwd>
<kwd lng="es"><![CDATA[Reporte de caso]]></kwd>
<kwd lng="es"><![CDATA[Revisión de la literatura]]></kwd>
<kwd lng="es"><![CDATA[Transmisión horizontal]]></kwd>
<kwd lng="es"><![CDATA[Base de datos]]></kwd>
</kwd-group>
</article-meta>
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