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CDC and WHO guidelines for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) diagnosis only recommend synthetic fiber swabs for nasopharyngeal (NP) sampling. We show that cotton-tipped plastic swabs do not inhibit PCR and have equivalent performance to rayon swabs. Cotton-tipped plastic swabs are massively produced worldwide and would prevent swab supply shortages under the current high SARS-CoV-2 testing demands, particularly in developing countries.

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The COVID-19 pandemic has spread worldwide since the outbreak in Wuhan (China) in December 2019, currently infecting over 25 million people and causing more than 800.000 deaths. In Ecuador, up to the 30th of August 2020, overall 113.648 confirmed cases and 6.555 deaths have been declared. Besides overloading of hospital, capacity for molecular diagnosis of SARS-CoV-2 by the Ministry of Public Health was quickly overwhelmed. In this context, emergency authorization for SARS-CoV-2 RT-qPCR diagnosis was granted to other institutions, like the “Agencia de Regulación y Control para la Bioseguridad y Cuarentena de Galápagos” (ABG), that implemented “LabGal” with support of One Health Research Group from “Universidad de Las Américas” (UDLA). The previous experience of ABG and the One Health Research Group in conducting massive surveillance of zoonotic diseases on livestock was crucial to the success on the control of COVID-19 outbreak at Galapagos Islands by the end of May 2020, when Latin American countries were leading the spread of the pandemic.