<?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>0465-546X</journal-id>
<journal-title><![CDATA[Medicina y Seguridad del Trabajo]]></journal-title>
<abbrev-journal-title><![CDATA[Med. segur. trab.]]></abbrev-journal-title>
<issn>0465-546X</issn>
<publisher>
<publisher-name><![CDATA[Escuela Nacional de Medicina del Trabajo. Instituto de Salud Carlos III]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0465-546X2023000400229</article-id>
<article-id pub-id-type="doi">10.4321/s0465-546x2023000400002</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación simplificada de riesgo biológico con R aplicado al proceso de tratamiento de aguas residuales]]></article-title>
<article-title xml:lang="en"><![CDATA[Simplified evaluation of biological risk with R applied to wastewater treatment process]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morales-Mora]]></surname>
<given-names><![CDATA[Eric]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A1"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Badilla-Aguilar]]></surname>
<given-names><![CDATA[Andrei]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Navarro]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alfaro-Arrieta]]></surname>
<given-names><![CDATA[Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barrantes-Jiménez]]></surname>
<given-names><![CDATA[Kenia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruepert]]></surname>
<given-names><![CDATA[Clemens]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Crowe]]></surname>
<given-names><![CDATA[Jennifer]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chacón-Jiménez]]></surname>
<given-names><![CDATA[Luz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Costa Rica Instituto de Investigaciones en Salud ]]></institution>
<addr-line><![CDATA[San José ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Costa Rica Escuela de Tecnologías en Salud ]]></institution>
<addr-line><![CDATA[San José ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Costarricense de Acueductos y Alcantarillados Laboratorio Nacional de Aguas ]]></institution>
<addr-line><![CDATA[Cartago ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional de Costa Rica Instituto Regional de Estudios en Sustancias Tóxicas ]]></institution>
<addr-line><![CDATA[Heredia ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>69</volume>
<numero>273</numero>
<fpage>229</fpage>
<lpage>242</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0465-546X2023000400229&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0465-546X2023000400229&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0465-546X2023000400229&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: Existen trabajos laborales con alto nivel de riesgo biológico como la operación y mantenimiento de plantas de tratamiento de aguas residuales (PTAR). El objetivo de este estudio fue evaluar el nivel de riesgo biológico para los trabajadores de tres PTAR con diferente tamaño de cobertura y crear una herramienta en el lenguaje de programación R para facilitar la aplicación de la Evaluación Simplificada de Riesgo Biológico (ESRB), su visualización y reporte de resultados.  Métodos: Se aplicó una ESRB en tres PTAR de distinto tamaño y se recolectaron muestras de indicadores fecales (en aire y superficies) y de polvo inhalable en zonas de trabajo y operación. De forma paralela, se desarrolló una herramienta automatizada en R para analizar, visualizar y reportar los resultados de la ESRB.  Resultados: En todas las zonas de trabajo incluidas en el estudio se detectaron indicadores de contaminación fecal y concentraciones de polvo inhalable por encima del límite recomendado. La aplicación de la herramienta programada en R del ESBR mostró que las plantas medianas y pequeñas tienen un riesgo biológico &#8220;intolerable&#8221;, lo que implica la necesidad de tomar medidas correctivas inmediatas. Por otro lado, la planta grande exhibió un nivel de riesgo &#8220;intermedio&#8221;, recomendándose medidas preventivas a corto plazo.  Conclusión: Los resultados destacan la importancia de implementar medidas correctivas y preventivas en las plantas de tratamiento de aguas residuales. La herramienta automatizada en R permitió una evaluación de riesgo eficiente, precisa y rápida, facilitando la identificación de riesgos ocupacionales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: There are occupational jobs with a high level of biological risk, including operating and maintaining wastewater treatment plants. This study aimed to assess the level of biological risk for workers in three wastewater treatment plants with different sizes of coverage during the year 2021 and, additionally, to create a tool in the R programming language to facilitate the application of the simplified evaluation of biological risk (SEBR) method, its visualization and reporting of results.  Methods: An SEBR was conducted at three WWTPs of different sizes, and fecal indicators (airborne and surface) and inhalable dust samples were collected in work and operational areas. In parallel, an automated tool was developed in R to analyze, visualize, and report the SEBR results.  Results: Indicators of fecal pollution and inhalable dust concentrations above the recommended limit were detected in all work areas included in the study. Applying the SEBR R-programmed tool showed that the medium and small plants have an &#8220;intolerable&#8221; biohazard, implying the need for immediate corrective action. On the other hand, the large plant exhibited an &#8220;intermediate&#8221; level of risk, recommending short-term preventive measures.  Conclusion: The results highlight the importance of implementing corrective and preventive measures in wastewater treatment plants. The automated tool in R allowed for an efficient, accurate, and rapid risk assessment, facilitating the identification of occupational risks.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Riesgo Biológico]]></kwd>
<kwd lng="es"><![CDATA[Evaluación de Riesgo Biológico]]></kwd>
<kwd lng="es"><![CDATA[Salud Laboral]]></kwd>
<kwd lng="es"><![CDATA[Plantas de Tratamiento de Aguas Residuales]]></kwd>
<kwd lng="es"><![CDATA[Lenguaje de Programación R]]></kwd>
<kwd lng="en"><![CDATA[Biohazard]]></kwd>
<kwd lng="en"><![CDATA[Biohazard Assessment]]></kwd>
<kwd lng="en"><![CDATA[Occupational Health]]></kwd>
<kwd lng="en"><![CDATA[Wastewater Treatment Plants]]></kwd>
<kwd lng="en"><![CDATA[R Programming Language]]></kwd>
</kwd-group>
</article-meta>
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