<?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>S0375-07602020000300001</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Seroprevalencia de anticuerpos contra Leptospira spp. en cerdos criados en Portoviejo, Ecuador]]></article-title>
<article-title xml:lang="en"><![CDATA[Seroprevalence of antibodies against Leptospira spp. in pigs raised in Portoviejo, Ecuador]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zambrano Gavilanes]]></surname>
<given-names><![CDATA[María Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lazo Pérez]]></surname>
<given-names><![CDATA[Leonel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guerrero Santana]]></surname>
<given-names><![CDATA[María Victoria]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villavicencio Moreir]]></surname>
<given-names><![CDATA[Tatiana Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vera Loor]]></surname>
<given-names><![CDATA[Leila Estefanía]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vera Mejía]]></surname>
<given-names><![CDATA[Ronald René]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fimia Duarte]]></surname>
<given-names><![CDATA[Rigoberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bulnes Goycochea]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castillo Cuenca]]></surname>
<given-names><![CDATA[Julio César]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Escuela Superior Politécnica Agropecuaria &#8220;Manuel Félix López&#8221; de Manabí  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas (UCLV) Facultad de Ciencias Agropecuarias Departamento de Medicina Veterinaria y Zootecnia]]></institution>
<addr-line><![CDATA[Las Villas ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Ciencias Médicas Facultad de Tecnología de la Salud ]]></institution>
<addr-line><![CDATA[Villa Clara ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Técnica de Manabí Facultad de Ciencias Veterinarias Carrera de Medicina Veterinaria]]></institution>
<addr-line><![CDATA[Manabí ]]></addr-line>
<country>Ecuador</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=S0375-07602020000300001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0375-07602020000300001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0375-07602020000300001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La leptospirosis es una enfermedad infecciosa bacteriana causada por leptospiras patógenas, que afectan a una amplia variedad de mamíferos incluido el hombre. Es considerada como una de las enfermedades zoonóticas de mayor distribución a nivel mundial.  Objetivo:  Determinar la seroprevalencia de anticuerpos contra Leptospira spp. y factores de riesgo asociados a la leptospirosis en algunas poblaciones de cerdos de Portoviejo.  Métodos:  Estudio descriptivo, realizado entre octubre de 2018 a marzo de 2019. Se estudiaron cerdos criados en parroquias del cantón Portoviejo, Manabí, Ecuador. Se colectaron un total de 280 muestras de sangre (115 de cerdos en crianza tecnificada y 165 en crianza de traspatio), 140 en el periodo lluvioso (enero-marzo) y 140 en el periodo seco (octubre-diciembre), de forma tal que fueran representativos los animales para ambas épocas. El diagnóstico serológico se realizó mediante la prueba de aglutinación microscópica.  Resultados:  En la crianza tecnificada, la seroprevalencia fue de 16,52 % (19/115) y en la crianza de traspatio, 20,61 % (34/165). Se presentó con mayor frecuencia en serovares Australis e Icterohaemorrhagiae en 14,28 % (40/280), respectivamente, y Bataviae en 13,21 % (37/280). El riesgo asociado a la infección por leptospiras fue mayor en los cerdos del sexo femenino, en las poblaciones de cerdos que consumieron agua de ríos y en los predios donde no se realizó un control de roedores silvestres.  Conclusiones:  La seroprevalencia a anticuerpos contra Leptospira spp. en la población de cerdos en crianza tecnificada y traspatio fue moderada, pero constituye un peligro potencial para la población humana expuesta. En ambos sistemas de crianza, los serovares más frecuentes fueron Australis, Icterohaemorrhagiae y Bataviae.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Leptospirosis is an infectious disease caused by pathogenic Leptospira sp. bacteria. It affects a large number of mammals, including humans, and is considered to be one of the most widely distributed zoonotic diseases worldwide.  Objective:  Determine the seroprevalence of antibodies against Leptospira spp. and the risk factors associated to leptospirosis in some pig populations from Portoviejo.  Methods:  A descriptive study was conducted from October 2018 to March 2019 of pigs raised in parishes from Portoviejo Canton in Manabí, Ecuador. A total 280 blood samples were collected (115 from pigs raised technically and 165 from pigs raised in backyards), 140 in the rainy season (January-March) and 140 in the dry season (October-December), so that the samples were representative of the two seasons. Serological diagnosis was performed with the microscopic agglutination test.  Results:  In technical breeding, seroprevalence was 16.52% (19/115), whereas in backyard breeding it was 20.61% (34/165). It was most common in serovars Australis and Icterohaemorrhagiae, with 14.28% (40/280), respectively, and Bataviae with 13.21% (37/280). Risk associated to Leptospira infection was greater in sows, in pig populations which drank river water, and in areas where wild rodent control was not present.  Conclusions:  Seroprevalence of antibodies against Leptospira spp. was moderate in technical and backyard pig raising populations, but it is a potential hazard for the human population exposed. In both breeding systems, the most common serovars were Australis, Icterohaemorrhagiae and Bataviae.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Leptospira spp.]]></kwd>
<kwd lng="es"><![CDATA[seroprevalencia]]></kwd>
<kwd lng="es"><![CDATA[anticuerpos]]></kwd>
<kwd lng="es"><![CDATA[peligro potencial]]></kwd>
<kwd lng="es"><![CDATA[cerdos]]></kwd>
<kwd lng="en"><![CDATA[Leptospira spp.]]></kwd>
<kwd lng="en"><![CDATA[seroprevalence]]></kwd>
<kwd lng="en"><![CDATA[antibodies]]></kwd>
<kwd lng="en"><![CDATA[potential hazard]]></kwd>
<kwd lng="en"><![CDATA[pigs]]></kwd>
</kwd-group>
</article-meta>
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