<?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>2312-3893</journal-id>
<journal-title><![CDATA[Revista Virtual de la Sociedad Paraguaya de Medicina Interna]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. virtual Soc. Parag. Med. Int.]]></abbrev-journal-title>
<issn>2312-3893</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Paraguaya de Medicina Interna]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2312-38932026000100213</article-id>
<article-id pub-id-type="doi">10.18004/rvspmi/2312-3893/2026.e13122613</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Cobertura vacunal y formas graves de influenza en pacientes hospitalizados en Paraguay: estudio retrospectivo en el contexto de un brote nacional]]></article-title>
<article-title xml:lang="en"><![CDATA[Vaccination coverage and severe forms of influenza in hospitalized patients in Paraguay: a retrospective study in the context of a national outbreak]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castillo Ocampos]]></surname>
<given-names><![CDATA[Erika Belén]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruíz Díaz]]></surname>
<given-names><![CDATA[Diego Nicolás Martínez]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Roa Colmán]]></surname>
<given-names><![CDATA[Amanda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zárate Gaona]]></surname>
<given-names><![CDATA[Diana Estela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Pacífico Facultad de Ciencias de la Salud ]]></institution>
<addr-line><![CDATA[Asunción ]]></addr-line>
<country>Paraguay</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Ministerio de Salud Pública y Bienestar Social Centro Médico Nacional Hospital Nacional]]></institution>
<addr-line><![CDATA[Itauguá ]]></addr-line>
<country>Paraguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2026</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2026</year>
</pub-date>
<volume>13</volume>
<numero>1</numero>
<fpage>213</fpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_arttext&amp;pid=S2312-38932026000100213&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_abstract&amp;pid=S2312-38932026000100213&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_pdf&amp;pid=S2312-38932026000100213&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: la influenza o gripe es una enfermedad contagiosa de gran impacto epidemiológico a nivel mundial. Posee vacuna anual específica para los serotipos circulantes.  Objetivo: evaluar la cobertura vacunal de los pacientes internados con diagnóstico de influenza durante un brote nacional, en el Hospital Nacional, Itauguá, Paraguay, en el 2025.  Metodología: se aplicó un estudio observacional descriptivo, de corte transversal y retrospectivo, con componente analítico. Se incluyeron pacientes internados en el mencionado hospital con diagnóstico de influenza. Los datos fueron recolectados de los expedientes médicos y del sistema del Programa Ampliado de Inmunizaciones - PAI.  Resultados: se incluyó 69 pacientes, con una media de edad de 54 ± 17 años, el 56,5% fueron hombres y el 81,2% provenía de zonas urbanas. El 73,9% eran hipertensos y 39,1% tabaquistas. El 53,6% no requirió oxígeno suplementario. Solo 17,4% estaba vacunado. El 68,1% desarrolló una forma grave de influenza, y neumonía en el 65,2%. La media de internación fue de 11 ± 6 días y el 4,3% falleció. La vacunación redujo un 60% la probabilidad de presentar formas graves de la enfermedad (OR = 0,4, IC 95% (0,1-1,3), p= 0,13) e internación prolongada (OR= 0,4, IC 95% (0,1-1,5), p= 0,20).  Conclusiones: la mayoría de los pacientes no contaba con la vacuna antiinfluenza anual y más de la mitad desarrolló formas graves de influenza como la neumonía. La vacunación se asoció con una menor probabilidad de desarrollar formas graves de la enfermedad e internación prolongada.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Influenza, or the flu, is a contagious disease with a significant epidemiological impact worldwide. There is an annual vaccine specific to the circulating serotypes.  Objective:  To evaluate vaccine coverage among patients hospitalized with a diagnosis of influenza during a national outbreak at the National Hospital in Itauguá, Paraguay, in 2025.  Methodology:  A descriptive, cross-sectional, retrospective observational study with an analytical component was conducted. Patients hospitalized at the aforementioned hospital with a diagnosis of influenza were included. Data were collected from medical records and the Expanded Program on Immunization (EPI) system.  Results:  Sixty-nine patients were included, with a mean age of 54 ± 17 years; 56.5% were men, and 81.2% came from urban areas. Seventy-three-point nine percent were hypertensive, and 39.1% were smokers. Fifty-three-point-six percent did not require supplemental oxygen, and only 17.4% were vaccinated. Sixty-eight-point-one percent developed a severe form of influenza, and 65.2% developed pneumonia. The mean length of hospital stay was 11 ± 6 days, and 4.3% died. Vaccination reduced the probability of developing severe forms of the disease by 60% (OR = 0.4, 95% CI (0.1-1.3), p = 0.13) and prolonged hospitalization (OR = 0.4, 95% CI (0.1-1.5), p = 0.20).  Conclusions:  Most patients did not receive the annual influenza vaccine, and more than half developed severe forms of influenza, such as pneumonia. Vaccination was associated with a lower probability of developing severe forms of the disease and prolonged hospitalization.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[gripe humana]]></kwd>
<kwd lng="es"><![CDATA[cobertura de vacunación]]></kwd>
<kwd lng="es"><![CDATA[hospitalización]]></kwd>
<kwd lng="es"><![CDATA[neumonía viral]]></kwd>
<kwd lng="en"><![CDATA[human influenza]]></kwd>
<kwd lng="en"><![CDATA[vaccination coverage]]></kwd>
<kwd lng="en"><![CDATA[hospitalization]]></kwd>
<kwd lng="en"><![CDATA[viral pneumonia]]></kwd>
</kwd-group>
</article-meta>
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