<?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>1684-1824</journal-id>
<journal-title><![CDATA[Revista Médica Electrónica]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.Med.Electrón.]]></abbrev-journal-title>
<issn>1684-1824</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Médicas de Matanzas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1684-18242022000100116</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efectividad del temefos 1 % en larvas de Culex quinquefasciatus. Matanzas, 2019]]></article-title>
<article-title xml:lang="en"><![CDATA[Effectiveness of temephos 1% in Culex quinquefasciatus larvae. Matanzas, 2019]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Serrate-Silveira]]></surname>
<given-names><![CDATA[Isabel de la Caridad]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aljovín-Llufrío]]></surname>
<given-names><![CDATA[Julieta]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Feria-Sigas]]></surname>
<given-names><![CDATA[Isairis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Méndez-Martínez]]></surname>
<given-names><![CDATA[Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villalobo-Vivero]]></surname>
<given-names><![CDATA[Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mulet-Toraño]]></surname>
<given-names><![CDATA[Mario de Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Provincial de Higiene, Epidemiología y Microbiología  ]]></institution>
<addr-line><![CDATA[ Matanzas]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2022</year>
</pub-date>
<volume>44</volume>
<numero>1</numero>
<fpage>116</fpage>
<lpage>129</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1684-18242022000100116&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1684-18242022000100116&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1684-18242022000100116&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  el temefos es el producto más utilizado para el tratamiento focal. Existe en diferentes formulaciones y se aplica para los depósitos de agua potable, en forma de gránulos de arena a una concentración del 1 %.  Objetivo:  determinar la duración de la efectividad del temefos, en su formulación costarricense Biolarv G1, en una población matancera de Culex quinquefasciatus.  Materiales y métodos:  se realizó un bioensayo de laboratorio, utilizando la F1 de una cepa matancera de Culex quinquefasciatus, la que se sometió a los efectos del Biolarv G1, lote 1180829. Se utilizaron tres variantes de recambio de agua potable.  Resultados:  la efectividad fue del 100 % de mortalidad larvaria hasta el 7º día en el recambio del 100 % de agua. Para el recambio del 50 % de agua, la mortalidad promedio del 1º al 17º día fue del 97,5 %. En el caso del recambio del 30 % de agua, la mortalidad fue del 100 % hasta el 27º día.  Conclusiones:  se demostró que el temefos, en su formulación Biolarv G1, puede tener mayor efectividad en recambios del 30 % de agua, con una durabilidad de alrededor de 30 días, lo que propicia la protección de los depósitos durante los ciclos de trabajo diseñados para la vigilancia y lucha antivectorial en Cuba.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  temefos is the most widely used product for focal treatment. It exists in different formulations and is applied for drinking water tanks, in the form of sand-like granules at a concentration of 1 %.  Objective:  to determine the duration of temefos effectiveness, in its Costa Rican formulation Biolarv G1, in a Matanzas population of Culex quinquefasciatus.  Materials and methods:  a laboratory bioassay was performed, using the F1 of a Matanzas strain of Culex quinquefasciatus, which was subjected to the effects of Biolarv G1, lot 1180829. Three variants of drinking water replacement were used.  Results:  the effectiveness was 100% of larval mortality until the 7th day when 100 % of wáter was replaced. For the replacement of 50 % of water, average mortality was 97.5 % from the 1st to the 17th day. In the case of 30 % water replacement, mortality was 100 % up to the 27th day.  Conclusions:  it was shown that temefos, in its formulation Biolarv G1, can be more effective in replacements of 30 % of water, with a durability of about 30 days, which facilitates the protection of reservoirs during work cycles designed for surveillance and anti-vector control in Cuba.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[temefos 1 %]]></kwd>
<kwd lng="es"><![CDATA[culícidos]]></kwd>
<kwd lng="es"><![CDATA[larvas de Culex quinquefasciatus]]></kwd>
<kwd lng="en"><![CDATA[temephos 1 %]]></kwd>
<kwd lng="en"><![CDATA[culicides]]></kwd>
<kwd lng="en"><![CDATA[Culex quinquefasciatus larvae]]></kwd>
</kwd-group>
</article-meta>
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