<?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. cuba. 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>S1561-30032023000100019</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Brote de transmisión comunitaria de COVID-19 en un municipio de La Habana (marzo-abril, 2021)]]></article-title>
<article-title xml:lang="en"><![CDATA[COVID-19 outbreak of community transmission in a municipality in Havana (March-April, 2021)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz Rodríguez]]></surname>
<given-names><![CDATA[Elba]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Galindo Santana]]></surname>
<given-names><![CDATA[Belkys María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Baldoquín Rodríguez]]></surname>
<given-names><![CDATA[Waldemar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Molina Águila]]></surname>
<given-names><![CDATA[Niurka]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Velázquez]]></surname>
<given-names><![CDATA[Dayana]]></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;  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Unidad Municipal de Higiene y Epidemiología de La Habana Vieja  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<volume>60</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1561-30032023000100019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1561-30032023000100019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1561-30032023000100019&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  Una oportuna investigación de los eventos epidemiológicos de la COVID-19 garantiza minimizar la propagación de la enfermedad en la población.  Objetivos: Caracterizar el brote de transmisión comunitaria de COVID-19 en un municipio de La Habana.  Métodos: Estudio transversal de casos positivos de infección por SARS-CoV-2 del brote Catedral en La Habana Vieja, en 2021. Las variables analizadas fueron: edad, sexo, manzana de residencia, fecha de inicio de síntomas, fecha de diagnóstico, forma clínica, tipo de caso. Se utilizó la metodología para el estudio de brotes. Se calcularon porcentajes, diferencias de proporciones, tasas, número reproductivo efectivo y parámetro de dispersión con intervalos de confianza de 95 %.  Resultados: Se notificó el brote el 23 de marzo y se cerró el 22 de abril con 106 casos (tasa de ataque 4,51 %), el pico en la notificación se produjo el 29 de marzo con 40 casos (37,73 %). La edad media fue de 43 años. Resultaron más afectados los adultos de 60 y más años (30,18 %), las mujeres (58,49 %) y la manzana 0024 (45,28 % de los casos). El 77,3 % no presentó síntomas, entre ellos dos superdispersores; los sintomáticos fueron leves y no hubo fallecidos. El número reproductivo efectivo global fue de 0,94 (IC: 0,70-1,21); superior en los asintomáticos (11,43 versus 4,00); y el parámetro de dispersión de 0,89 (IC: 0,51-2,09), superior en los sintomáticos (1,06 versus 0,69).  Conclusiones:  El control epidemiológico oportuno ante cada caso permitió la corta duración del brote y que no hubiesen fallecidos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  A timely investigation of COVID-19 epidemiological events guarantees to minimize the spread of the disease in the population.  Objective: To characterize the COVID-19 outbreak of community transmission in a municipality in Havana.  Methods: Cross-sectional study of positive cases of SARS-CoV-2 infection of the &#8220;Cathedral&#8221; outbreak in Old Havana in 2021. The variables analyzed were: age, sex, city block of residence, date of symptom onset, date of diagnosis, clinical manifestations, and type of case. The methodology for the study of outbreaks was used. Percentages, differences in proportions, rates, effective reproductive number, and dispersion parameter with 95% confidence intervals were calculated.  Results: The outbreak was reported on March 23 and closed on April 22 with 106 cases (attack rate of 4.51%). The peak was notified on March 29 with 40 cases (37.73%). The mean age was 43 years. Adults aged 60 years and older (30.18%), women (58.49%), and block 0024 (45.28% of cases) were most affected. A total of 77.3% were asymptomatic, including two superspreaders; symptomatic cases were mild and there were no deaths. The overall effective reproductive number was 0.94 (CI: 0.70-1.21); higher in asymptomatic cases (11.43 versus 4.00); and the dispersion parameter was 0.89 (CI: 0.51-2.09), higher in symptomatic cases (1.06 versus 0.69).  Conclusions:  Timely epidemiological control of each case ensured the short duration of the outbreak and no deaths.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[trasmisión]]></kwd>
<kwd lng="es"><![CDATA[infección]]></kwd>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[brote]]></kwd>
<kwd lng="es"><![CDATA[La Habana]]></kwd>
<kwd lng="en"><![CDATA[transmission]]></kwd>
<kwd lng="en"><![CDATA[infection]]></kwd>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[outbreak]]></kwd>
<kwd lng="en"><![CDATA[Havana]]></kwd>
</kwd-group>
</article-meta>
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