<?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>1679-4974</journal-id>
<journal-title><![CDATA[Epidemiologia e Serviços de Saúde]]></journal-title>
<abbrev-journal-title><![CDATA[Epidemiol. Serv. Saúde]]></abbrev-journal-title>
<issn>1679-4974</issn>
<publisher>
<publisher-name><![CDATA[Secretaria de Vigilância em Saúde e Ambiente - Ministério da Saúde do Brasil]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1679-49742021000200017</article-id>
<article-id pub-id-type="doi">10.1590/s1679-49742021000200002</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[O efeito da testagem laboratorial nos indicadores de acompanhamento da COVID-19: uma análise dos 50 países com maior número de casos]]></article-title>
<article-title xml:lang="es"><![CDATA[El efecto de las pruebas de laboratorio en los indicadores de seguimiento de COVID-19: un análisis de los 50 países con el mayor número de casos]]></article-title>
<article-title xml:lang="en"><![CDATA[The effect of laboratory testing on COVID-19 monitoring indicators: an analysis of the 50 countries with the highest number of cases]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pilecco]]></surname>
<given-names><![CDATA[Flávia Bulegon]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Coelho]]></surname>
<given-names><![CDATA[Carolina Gomes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernandes]]></surname>
<given-names><![CDATA[Qeren Hapuk Rodrigues Ferreira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silveira]]></surname>
<given-names><![CDATA[Ismael Henrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pescarini]]></surname>
<given-names><![CDATA[Júlia Moreira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortelan]]></surname>
<given-names><![CDATA[Naiá]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gabrielli]]></surname>
<given-names><![CDATA[Ligia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aquino]]></surname>
<given-names><![CDATA[Estela M. L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barreto]]></surname>
<given-names><![CDATA[Maurício Lima]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal de Minas Gerais Departamento de Medicina Preventiva e Social ]]></institution>
<addr-line><![CDATA[Belo Horizonte MG]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Fundação Instituto Oswaldo Cruz Centro de Integração de Dados e Conhecimentos para Saúde ]]></institution>
<addr-line><![CDATA[Salvador BA]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidade Federal da Bahia Instituto de Saúde Coletiva ]]></institution>
<addr-line><![CDATA[Salvador BA]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>30</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iec.gov.br/scielo.php?script=sci_arttext&amp;pid=S1679-49742021000200017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iec.gov.br/scielo.php?script=sci_abstract&amp;pid=S1679-49742021000200017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iec.gov.br/scielo.php?script=sci_pdf&amp;pid=S1679-49742021000200017&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Objetivo  Analisar como a testagem da população influencia os indicadores de saúde usados para monitorar a pandemia de COVID-19 nos 50 países com maior número de casos diagnosticados.  Métodos  Estudo ecológico sobre dados secundários, extraídos em 19/08/2020. Foram calculadas incidência acumulada, taxa de mortalidade, letalidade e proporção de testes positivos. Os dados foram descritos e apresentados graficamente, com o respectivo coeficiente de correlação de Spearman.  Resultados  A taxa de testagem variou enormemente entre os países. A incidência acumulada e a proporção de testes positivos foram correlacionadas ao número de testes, enquanto a taxa de mortalidade e a letalidade apresentaram correlação baixa com esse indicador.  Conclusão  A maioria dos países não testa o suficiente para garantir adequado monitoramento da pandemia, com reflexo na qualidade dos indicadores. A ampliação do número de testes é fundamental; porém, ela deve ser acompanhada de outras medidas, como isolamento de casos diagnosticados e rastreamento de contatos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo  Analizar cómo el testeo poblacional influye en los indicadores de salud utilizados para monitorear la pandemia de COVID-19 en los 50 países con mayor número de casos diagnosticados.  Métodos Estudio ecológico, con datos secundarios, recogidos el 19/8/2020. Se calcularon la incidencia acumulada, la tasa de mortalidad, la letalidad y la proporción de pruebas positivas. Los datos fueron descritos y presentados gráficamente, con el respectivo Coeficiente de Correlación de Spearman.  Resultados  La tasa de testeo varió enormemente entre los países. La incidencia acumulada y la proporción de pruebas positivas se correlacionaron con el número de pruebas, mientras que la tasa de mortalidad y de letalidad mostraron una baja correlación con este indicador.  Conclusión La mayoría de los países no realizan suficientes pruebas para garantizar un seguimiento adecuado de la pandemia, lo que se refleja en la calidad de los indicadores. La ampliación del número de pruebas es fundamental, y debe ir acompañada de aislamiento de casos y seguimiento de contactos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective  To analyse how testing the population influences the health indicators used to monitor the COVID-19 pandemic in the 50 countries with the highest number of diagnosed cases.  Methods This was an ecological study using secondary data retrieved on 8/19/2020. Cumulative incidence, mortality rate, case-fatality rate, and proportion of positive tests were calculated. The data were described and presented graphically, with their respective Spearman Correlation Coefficients.  Results The testing rate varied enormously between countries. Cumulative incidence and the proportion of positive tests were correlated with the number of tests, while the mortality rate and case-fatality rate showed low correlation with this indicator.  Conclusion Most countries do not test enough to ensure adequate monitoring of the pandemic, and this is reflected in the quality of the indicators. Expanding the number of tests is essential, but it needs to be accompanied by other measures, such as isolation of diagnosed cases and contact tracing.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Infecções por Coronavírus]]></kwd>
<kwd lng="pt"><![CDATA[Indicadores Básicos de Saúde]]></kwd>
<kwd lng="pt"><![CDATA[Incidência]]></kwd>
<kwd lng="pt"><![CDATA[Mortalidade]]></kwd>
<kwd lng="pt"><![CDATA[Betacoronavírus]]></kwd>
<kwd lng="es"><![CDATA[Infecciones por Coronavirus]]></kwd>
<kwd lng="es"><![CDATA[Indicadores de Salud]]></kwd>
<kwd lng="es"><![CDATA[Incidencia]]></kwd>
<kwd lng="es"><![CDATA[Mortalidad]]></kwd>
<kwd lng="es"><![CDATA[Betacoronavirus]]></kwd>
<kwd lng="en"><![CDATA[Coronavirus Infections]]></kwd>
<kwd lng="en"><![CDATA[Health Status Indicators]]></kwd>
<kwd lng="en"><![CDATA[Testing Strategies]]></kwd>
<kwd lng="en"><![CDATA[Incidence]]></kwd>
<kwd lng="en"><![CDATA[Mortality]]></kwd>
<kwd lng="en"><![CDATA[SARS-CoV-2]]></kwd>
</kwd-group>
</article-meta>
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