<?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>1665-1146</journal-id>
<journal-title><![CDATA[Boletín médico del Hospital Infantil de México]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Med. Hosp. Infant. Mex.]]></abbrev-journal-title>
<issn>1665-1146</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud, Hospital Infantil de México Federico Gómez]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-11462025000500002</article-id>
<article-id pub-id-type="doi">10.24875/bmhim.24000145</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Relación entre genotipo y carga viral de virus del papiloma humano y la gravedad de presentación de la papilomatosis respiratoria recurrente en niños]]></article-title>
<article-title xml:lang="en"><![CDATA[Relationship between genotype and viral load of human papillomavirus, and presentation severity of recurrent respiratory papillomatosis in pediatrics]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortiz-Hernández]]></surname>
<given-names><![CDATA[Enrique G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vallejo]]></surname>
<given-names><![CDATA[Ariadna]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guzmán]]></surname>
<given-names><![CDATA[Diego]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[León]]></surname>
<given-names><![CDATA[Melissa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calderón]]></surname>
<given-names><![CDATA[Natalia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Civil Fray Antonio Alcalde Servicio de Otorrinolaringología y Cirugía de Cabeza y Cuello ]]></institution>
<addr-line><![CDATA[Guadalajara ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2025</year>
</pub-date>
<volume>82</volume>
<numero>5</numero>
<fpage>282</fpage>
<lpage>288</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-11462025000500002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-11462025000500002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-11462025000500002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: La papilomatosis respiratoria recurrente es un padecimiento que se presenta mayormente en la población pediátrica con una tasa de 3.62 a 4.3 por cada 100,000 menores. La manifestación clínica más frecuente es la disfonía; sin embargo, la enfermedad puede progresar a formas más graves, generando obstrucción grave de las vías respiratorias.  Métodos: Se realizó un estudio transversal en el cual se incluyeron pacientes diagnosticados con papilomatosis laríngea confirmado por medio de análisis histopatológico y reacción en cadena de la polimerasa; se determinó el genotipo del virus y su carga viral mediante su búsqueda en los expedientes clínicos, por medio de un formulario estructurado se capturaron las variables clínicas y genéticas de cada caso.  Resultados: Se incorporaron 32 pacientes, con prevalencia del genotipo 6 del 41% y la misma prevalencia en el genotipo 11, con un porcentaje de coinfección con ambos subtipos del 18%. El genotipo 11 se encontró asociado a un mayor número de resecciones (p = 0.004), un puntaje mayor en la escala de Derkay (p = 0.02) y una gravedad mayor al presentar &#8805; 4 cirugías por año o &#8805; 10 cirugías totales (p = 0.04).  Conclusiones: El genotipo 11 del virus del papiloma humano se asoció a mayor gravedad de papilomatosis respiratoria recurrente en los pacientes pediátricos, por lo tanto, dicha población resulta más susceptible a una peor evolución (lo que incrementa la demanda de atención a los servicios médicos), así como a afectación en la calidad de vida de los menores.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background: Recurrent respiratory papillomatosis is a condition that occurs mainly in the pediatric population with a rate of 3.62 to 4.3 per 100,000 children. The most common clinical manifestation is dysphonia; however, the disease can progress to more severe forms, generating serious obstruction of the airway.  Methods: A cross-sectional study was conducted in which patients diagnosed with laryngeal papillomatosis confirmed by histopathological analysis and polymerase chain reaction were included. The genotype of the virus and its viral load were determined through a search in the clinical records, and the clinical and genetic variables of each case were captured through a structured form.  Results: A total of 32 patients were enrolled, of which the prevalence of genotype 6 was found in 41% and the same prevalence in the case of genotype 11, with a percentage of coinfection with both subtypes of 18%. Genotype 11 was found to be associated with a greater number of resections (p = 0.004), a higher score on the Derkay scale (p = 0.02) and greater severity when presenting &#8805; 4 surgeries per year and/or &#8805; 10 total surgeries (p = 0.04).  Conclusions: Human papillomavirus genotype 11 showed a greater association with the presentation of greater severity of recurrent respiratory papillomatosis in pediatric patients; therefore, this population is more susceptible to a poor outcome (which increases the demand for medical services), as well as impact on the quality of life of minors.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Papilomatosis respiratoria recurrente]]></kwd>
<kwd lng="es"><![CDATA[Virus del papiloma humano]]></kwd>
<kwd lng="es"><![CDATA[Reacción en cadena de la polimerasa]]></kwd>
<kwd lng="es"><![CDATA[Ácido desoxirribonucleico]]></kwd>
<kwd lng="en"><![CDATA[Recurrent respiratory papillomatosis]]></kwd>
<kwd lng="en"><![CDATA[Human papillomavirus]]></kwd>
<kwd lng="en"><![CDATA[Polymerase chain reaction]]></kwd>
<kwd lng="en"><![CDATA[Deoxyribonucleic acid]]></kwd>
</kwd-group>
</article-meta>
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