The 501Y.V2 SARS-CoV-2 variant has an intermediate viral load between the 501Y.V1 and the historical variants in nasopharyngeal samples from newly diagnosed COVID-19 patients

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Abstract

The 501Y.V2 and the 501Y.V1 SARS-CoV-2 variants emerged and spread rapidly into the world. We analysed the viral load of 643 nasopharyngeal samples of COVID-19 patients at diagnosis and found that the 501Y.V1 and the 501Y.V2 variants presented a viral load three to ten times and two times higher than the historical variants, respectively. Highlights Viral load in COVID-19 patient nasopharyngeal samples was different between variants. The 501Y.V2 variant had a viral load 2 times higher than the historical variants The 501Y.V2 variant had a viral load slightly lower than the 501Y.V1 The 501Y.V1 variant had a viral load 3-10 times higher than the historical variants

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License: CC-BY-NC-ND-4.0