Journal
INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES
Volume 113, Issue -, Pages 12-14Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijid.2021.09.076
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Funding
- CNRS
- IRD
- ANR
- Region Occitanie
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The analysis of 88,375 cycle amplification (Ct) values revealed that the Alpha variant of SARS-CoV-2 had a transmission advantage over wild type strains, causing a rapid increase in infections. Additionally, tests positive for Alpha and Beta/Gamma variants showed significantly lower Ct values, indicating higher viral loads.
SARS-CoV-2 variants raise concern regarding the mortality caused by COVID-19 epidemics. We analyse 88,375 cycle amplification (Ct) values from variant-specific RT-PCR tests performed between January 26 and March 13, 2021. We estimate that on March 12, nearly 85% of the infections were caused by the Alpha variant and that its transmission advantage over wild type strains was between 38 and 44%. We also find that tests positive for Alpha and Beta/Gamma variants exhibit significantly lower cycle threshold (Ct) values. (C) 2021 The Authors. Published by Elsevier Ltd on behalf of International Society for Infectious Diseases.
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