<?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>0375-0760</journal-id>
<journal-title><![CDATA[Revista Cubana de Medicina Tropical]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cubana Med Trop]]></abbrev-journal-title>
<issn>0375-0760</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Información de Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0375-07602020000300013</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[COVID-19 y aguas residuales]]></article-title>
<article-title xml:lang="en"><![CDATA[COVID-19 and wastewater]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barreto Torrella]]></surname>
<given-names><![CDATA[Sarah Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad "Ignacio Agramonte Loynaz"  ]]></institution>
<addr-line><![CDATA[Camagüey ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>72</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0375-07602020000300013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0375-07602020000300013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0375-07602020000300013&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  Las aguas residuales constituyen una vía para la transmisión de muchas enfermedades, incluidas las virales. La vigilancia epidemiológica basada en aguas residuales se ha empleado para el monitoreo y control de Norovirus GII.17, poliovirus.  Objetivo:  Explorar sobre la detección del SARS-CoV-2 en aguas residuales, su prevalencia, las evidencias de transmisión y su uso potencial para la vigilancia epidemiológica a diferentes escalas espaciales.  Métodos:  Se realizó una revisión bibliográfica-documental en las bases de datos PubMed, ScienceDirect, EBSCO, SCielo. Se consultaron 53 fuentes, de las cuales se seleccionaron 32 en función del objetivo propuesto.  Análisis y síntesis de la información:  El virus ha sido en heces fecales, hisopados rectales y en aguas residuales de diferentes países. Ambos medios podrían ser una preocupación para la transmisibilidad aunque existan bajas cargas virales en ellos. Con el auxilio de técnicas moleculares se ha detectado en aguas crudas una concentración de hasta 10 6 copias por litro. Mientras que en aguas residuales tratadas la cifra ha sido de 10 5 copias por litro.  Conclusiones:  Aunque no existen evidencias de transmisión fecal-oral, fecal-nasal o mediante las aguas residuales, sí constituyen una fuente potencial de transmisión a demostrar. Resulta necesario un método estandarizado para la detección de SARS-CoV-2 en aguas residuales, realizar estudios de prevalencia, no solo en ese medio sino en las operaciones y procesos de tratamiento de agua. En Cuba existe potencial para el monitoreo y control de la enfermedad en la población, así como para el empleo de la vigilancia epidemiológica basada en aguas residuales,]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Wastewater is a route for the transmission of many diseases, including viral infections. Wastewater-based epidemiological surveillance has been used to monitor and control Norovirus GII.17, poliovirus.  Objective:  Explore into SARS-CoV-2 detection in wastewater, its prevalence, the evidence of its transmission and its potential use for epidemiological surveillance on various spatial scales.  Methods:  A bibliographic and document review was carried out in the databases PubMed, ScienceDirect, EBSCO and SciELO. A total 53 sources were consulted, of which 32 were selected based on the objective set.  Analysis and synthesis of results:  The virus has been detected in fecal matter, rectal swabs and in wastewater from different countries. Both media could be a reason for concern in terms of transmissibility, despite the low viral loads they carry. Molecular techniques have revealed the presence of as many as copies per liter in raw water, whereas treated wastewater has been found to contain copies per liter.  Conclusions:  Though no evidence is available of fecal-oral, fecal-nasal or wastewater transmission, these routes are a potential source of transmission awaiting substantiation. A standardized method is required for SARS-CoV-2 detection in wastewater. Prevalence studies should be conducted not only in this medium, but also in water treatment operations and processes. In Cuba there is potential for the surveillance and control of the disease in the population, as well as for the use of wastewater-based epidemiological surveillance.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[coronavirus SARS-CoV-2]]></kwd>
<kwd lng="es"><![CDATA[aguas residuales]]></kwd>
<kwd lng="es"><![CDATA[vigilancia epidemiológica]]></kwd>
<kwd lng="en"><![CDATA[coronavirus SARS-CoV-2]]></kwd>
<kwd lng="en"><![CDATA[wastewater]]></kwd>
<kwd lng="en"><![CDATA[epidemiological surveillance]]></kwd>
</kwd-group>
</article-meta>
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