<?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>0138-6557</journal-id>
<journal-title><![CDATA[Revista Cubana de Medicina Militar]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. cuban. med. mil.]]></abbrev-journal-title>
<issn>0138-6557</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Información de Ciencias MédicasEditorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0138-65572024000100015</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caracterización genética de aislamientos de SARS-CoV-2 en las diferentes etapas pandémicas de COVID-19 en Cuba]]></article-title>
<article-title xml:lang="en"><![CDATA[Genetic characterization of SARS-CoV-2 isolates in the different pandemic stages of COVID-19 in Cuba]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Machado Zaldívar]]></surname>
<given-names><![CDATA[Liuber Yans]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Noa Romero]]></surname>
<given-names><![CDATA[Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Rizo]]></surname>
<given-names><![CDATA[Laura Sofía]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Blanco de Armas]]></surname>
<given-names><![CDATA[Madeline]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Sosa]]></surname>
<given-names><![CDATA[Nibaldo Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Enríquez Puertas]]></surname>
<given-names><![CDATA[Juliet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romay Franchi]]></surname>
<given-names><![CDATA[Dania]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Guevara]]></surname>
<given-names><![CDATA[María Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrillo Valdés]]></surname>
<given-names><![CDATA[Danay]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dubed Echevarría]]></surname>
<given-names><![CDATA[Marta]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz Sui]]></surname>
<given-names><![CDATA[Otto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Acosta]]></surname>
<given-names><![CDATA[Mireida]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigaciones Científicas de la Defensa Civil  ]]></institution>
<addr-line><![CDATA[ Mayabeque]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2024</year>
</pub-date>
<volume>53</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0138-65572024000100015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0138-65572024000100015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0138-65572024000100015&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  El desarrollo de vacunas seguras y eficaces contra el SARS-CoV-2 supuso un enorme reto para enfrentar la pandemia de la COVID-19. La aparición de nuevas variantes del SARS-CoV-2 representa un reto en la evaluación de la efectividad de las vacunas, diferentes candidatos vacunales y terapéuticos desarrollados por la comunidad científica.  Objetivos:  Caracterizar la diversidad genética de aislamientos virales cubanos en el periodo comprendido entre junio de 2020 y diciembre de 2022.  Métodos:  Se obtuvo el ARN de SARS-CoV-2 de 27 aislamientos a partir de sobrenadante de cultivo celular y se secuenció el gen S. Las secuencias generadas se emplearon para la identificación y posterior caracterización molecular de las variantes genéticas del virus mediante análisis filogenético y el uso de las herramientas disponibles en la base de datos GISEAD.  Resultados:  Las variantes detectadas en los aislamientos cubanos de SARS-CoV-2 estudiados se correspondieron a las identificadas en los estudios de vigilancia genómica realizados en las diferentes etapas pandémicas de la COVID-19 en Cuba. El 33,3 % de los aislamientos secuenciados correspondieron a los diferentes linajes de la variante Ómicron, seguido de la variante Beta B 1.351 (29,6 %), otros linajes de SARS-CoV-2 (25,9 %), Alfa B 1.1.7 (7,4 %) y Delta B.1.575 (3,7 %). Se detectó la mutación D614G en todos los aislamientos de SARS-CoV-2 estudiados.  Conclusiones:  La caracterización molecular de los aislamientos cubanos de SARS-CoV-2 tiene una elevada diversidad genética. Posibilita evaluar in vitro e in vivo los candidatos vacunales y agentes terapéuticos desarrollados por la industria biofarmacéutica cubana.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  The development of safe and effective vaccines against SARS-CoV-2 posed a huge challenge to face the COVID-19 pandemic. The appearance of new variants of SARS-CoV-2 represents a challenge in evaluating the effectiveness of vaccines, different vaccine and therapeutic candidates developed by the scientific community.  Objectives:  Characterize and analyze the genetic diversity of Cuban viral isolates, in the period between June 2020 and December 2022.  Methods:  SARS-CoV-2 RNA was obtained from 27 isolates from cell culture supernatant and the S gene was sequenced. The generated sequences were used for the identification and subsequent molecular characterization of the genetic variants of the virus through phylogenetic analysis and the use of the tools available in the GISEAD database.  Results:  The variants detected in the Cuban SARS-CoV-2 isolates corresponded to those identified in the genomic surveillance studies carried out in the different stages of the COVID-19 pandemic in Cuba. 33.3% of the sequenced isolates corresponded to the different lineages of the Omicron variant, followed by Beta B 1.351 (29.6%), other SARS-CoV-2 lineages (25.9%), Alpha B 1.1.7 (7.4%) and Delta B.1.575 (3.7%). The D614G mutation was detected in all SARS-CoV-2 isolates studied.  Conclusions:  The molecular characterization of the Cuban isolates of SARS-CoV-2 has a high genetic diversity. It makes it possible to evaluate in vitro and in vivo vaccine candidates and therapeutic agents developed by the Cuban biopharmaceutical industry.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[Cuba]]></kwd>
<kwd lng="es"><![CDATA[diversidad genética]]></kwd>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[Cuba]]></kwd>
<kwd lng="en"><![CDATA[genetic diversity]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
</kwd-group>
</article-meta>
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