<?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>0124-7107</journal-id>
<journal-title><![CDATA[Universidad y Salud]]></journal-title>
<abbrev-journal-title><![CDATA[Univ. Salud]]></abbrev-journal-title>
<issn>0124-7107</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Nariño]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0124-71072022000300267</article-id>
<article-id pub-id-type="doi">10.22267/rus.222403.281</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Fifth peak of COVID-19 and use of masks in open and enclosed spaces]]></article-title>
<article-title xml:lang="es"><![CDATA[Quinta arremetida de COVID-19 y el uso de mascarillas en espacios abiertos y cerrados]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fuertes-Bucheli]]></surname>
<given-names><![CDATA[José Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peláez-Martínez]]></surname>
<given-names><![CDATA[Juan David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Niño]]></surname>
<given-names><![CDATA[María del Mar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguilar-González]]></surname>
<given-names><![CDATA[Ana María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dorris]]></surname>
<given-names><![CDATA[Madeline]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferro]]></surname>
<given-names><![CDATA[Beatriz E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pacheco]]></surname>
<given-names><![CDATA[Robinson]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Icesi Facultad de Ciencias de la Salud ]]></institution>
<addr-line><![CDATA[Cali ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Boston University Medical Campus Master of Science in Medical Sciences 72 East Concord St]]></institution>
<addr-line><![CDATA[Boston ]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Libre Grupo de Investigación en Epidemiología y Servicios de Salud (GrIEpyS) ]]></institution>
<addr-line><![CDATA[Cali ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>24</volume>
<numero>3</numero>
<fpage>267</fpage>
<lpage>272</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0124-71072022000300267&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0124-71072022000300267&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0124-71072022000300267&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: COVID-19 pandemic requires permanent adaptations in management depending on the epidemiological situation.  Objective: To analyze the epidemiological behavior of COVID-19 in Cali (Colombia) after ending the face mask mandate in open and enclosed spaces between March 1 and July 11 of 2022.  Materials and methods: An observational descriptive study of COVID-19 cases and cumulative incidence (CI) for 7 days with two temporary milestones: refusal of the obligatory use of face masks in open and enclosed environments, using data published by the National Institute of Health. The temporary tendency was evaluated with the Mann-Kendall non parametric test.  Results: Differences were found between the first and second milestone; 922 cases in 75 days vs. 12,037 in 59 days; Tau=-0.22 vs. 0.57, S=-608 vs. 968, Var(S)=47,574.66 versus 233,280.66; Sen slope=-0.10 (IC95%: -0.18 and -0.03) versus 7.39 (IC95%: 5.23 and 8.88). After the second milestone, the CI increased with a positive tendency (S=23, p=0.006).  Conclusions: The significant increases of COVID-19 cases and the CI coincided with the ending of the face mask mandate in enclosed spaces. Therefore, it is advisable to return to the use of face masks in enclosed spaces, strengthen infodemic management, promote vaccination, and improve natural ventilation.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: La pandemia COVID-19 demanda permanentes adaptaciones en la gestión según la situación epidemiológica.  Objetivo: Analizar el comportamiento epidemiológico de COVID-19 en Cali (Colombia) post levantamiento de obligatoriedad de usar mascarillas en ambientes abiertos y cerrados, entre marzo 1 y julio 11/2022.  Materiales y métodos: Estudio observacional descriptivo de casos de COVID-19 e incidencia acumulada (IA) para 7 días, con dos hitos temporales: desistimiento del uso mandatorio de mascarillas en ambientes abiertos y cerrados, usando datos publicados por el Instituto Nacional de Salud. Se evaluó la tendencia temporal con la prueba no paramétrica Mann-Kendall.  Resultados: Se demostraron diferencias entre el primer y segundo hito: 922 casos en 75 días versus 12.037 en 59 días; Tau=-0,22 versus 0,57, S=-608 versus 968, Var(S)=47.574,66 versus 233.280,66; pendiente de Sen=-0,10 (IC95%: -0,18 y -0,03) versus 7,39 (IC95%: 5,23 y 8,88). Luego del segundo hito, la IA aumentó con tendencia positiva (S=23, p=0,006).  Conclusiones: El aumento significativo de casos de COVID-19 y de IA coincidió con el levantamiento de la medida de usar mascarillas en espacios cerrados. Por tanto, se apoya el regresar al uso de mascarillas en espacios cerrados, reforzar la gestión infodémica, promover la vacunación y acrecentar la ventilación natural.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[COVID-19]]></kwd>
<kwd lng="es"><![CDATA[máscaras]]></kwd>
<kwd lng="es"><![CDATA[control de enfermedades transmisibles]]></kwd>
<kwd lng="es"><![CDATA[monitoreo epidemiológico]]></kwd>
<kwd lng="es"><![CDATA[Colombia]]></kwd>
<kwd lng="en"><![CDATA[COVID-19]]></kwd>
<kwd lng="en"><![CDATA[masks]]></kwd>
<kwd lng="en"><![CDATA[communicable disease control]]></kwd>
<kwd lng="en"><![CDATA[epidemiological monitoring]]></kwd>
<kwd lng="en"><![CDATA[Colombia]]></kwd>
</kwd-group>
</article-meta>
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