<?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>0370-3908</journal-id>
<journal-title><![CDATA[Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. acad. colomb. cienc. exact. fis. nat.]]></abbrev-journal-title>
<issn>0370-3908</issn>
<publisher>
<publisher-name><![CDATA[Academia Colombiana de Ciencias Exactas, Físicas y Naturales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0370-39082022000100027</article-id>
<article-id pub-id-type="doi">10.18257/raccefyn.1590</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Seroreactivity to SARS-CoV-2 in individuals attending a university campus in Bogotá, Colombia]]></article-title>
<article-title xml:lang="es"><![CDATA[Serorreactividad al SARS-CoV-2 en trabajadores de un campus universitario en Bogotá, Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gonzalez]]></surname>
<given-names><![CDATA[John M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos-Barbosa]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jailer]]></surname>
<given-names><![CDATA[Catherine]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Otalora]]></surname>
<given-names><![CDATA[Germán]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[Luis J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guevara-Suárez]]></surname>
<given-names><![CDATA[Marcela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Restrepo]]></surname>
<given-names><![CDATA[Silvia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Los Andes Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de los Andes Departamento Médico y Salud Ocupacional ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Los Andes Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Los Andes Vice-rectoría de Investigación y Creación ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad de Los Andes Departamento de Ingeniería Química y de Alimentos ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<volume>46</volume>
<numero>178</numero>
<fpage>27</fpage>
<lpage>35</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0370-39082022000100027&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0370-39082022000100027&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0370-39082022000100027&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Most community-specific serological surveys for SARS-CoV-2 antibodies have been performed in healthcare workers and institutions. In this study, IgG antibodies specific to the virus were evaluated in individuals working at a university campus in Bogotá, Colombia. Our aim was to determine previous exposure to SARS-CoV-2 in those attending the campus during city lockdown. A total of 237 individuals including 93 women and 144 men were evaluated using chemiluminescent detection of IgG anti-N-viral protein between November and December 2020. There were 32 positive individuals, i.e., a seroprevalence of 13.5% (10 women and 22 men) mostly asymptomatic (68.75%); we identified three clusters of seropositive individuals. Only 13 of the seropositive individuals had previous positive detection of SARS-CoV-2 RNA by RT-qPCR performed on average 91 days before the serological test. Seropositive individuals did not come from the boroughs with higher percentages of SARS-CoV-2 cases in the city. The survey was carried out after the first peak of SARS-CoV-2 transmission in the city and before the preparedness to reopen the campus for students in 2021, which demonstrates a low seroprevalence in a high percentage of asymptomatic individuals. These results will help to evaluate some of the strategies stablished to control virus spread on the campus or other similar communities.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La mayoría de las evaluaciones serológicas comunitarias específicas para los anticuerpos de SARS-CoV-2 se han realizado en instituciones y en trabajadores de la salud. En este estudio, se evaluaron anticuerpos IgG específicos para el virus en personas que trabajaban en una universidad de Bogotá, Colombia. El objetivo fue determinar la exposición previa a SARS-CoV-2 en los asistentes al campus durante el cierre de la ciudad. Se evaluaron 237 personas, incluidas 93 mujeres y 144 hombres, mediante la detección quimioluminiscente de anticuerpos IgG anti-proteína N viral entre noviembre y diciembre de 2020. Se encontraron 32 individuos positivos, es decir, una seroprevalencia del 13,5 % (10 mujeres y 22 hombres), en su mayoría asintomáticos (68,75 %) y se determinaron tres grupos de individuos seropositivos. Solo 13 de los individuos serorreactivos tenían una detección positiva previa del ARN del SARS-CoV-2 mediante RT-qPCR realizada, en promedio, 91 días antes de la prueba serológica. Los individuos seropositivos no provenían de las localidades con los porcentajes más altos de casos de SARS-CoV-2 en la ciudad. La encuesta se realizó después del primer pico de transmisión del SARS-CoV-2 en la ciudad y antes de la preparación para la reapertura del campus a estudiantes en el 2021, y demostró una baja seroprevalencia con un alto procentaje de asintomáticos. Estos resultados ayudarán a evaluar algunas de las estrategias establecidas para controlar la propagación del virus en instituciones educativas u otras comunidades similares.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Coronavirus]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[Covid-19]]></kwd>
<kwd lng="en"><![CDATA[serology]]></kwd>
<kwd lng="es"><![CDATA[Coronavirus]]></kwd>
<kwd lng="es"><![CDATA[SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[Covid-19]]></kwd>
<kwd lng="es"><![CDATA[Serología]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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