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The term variant of concern (VOC) for SARS-CoV-2, which causes COVID-19, is a category used for variants of the virus where mutations in their spike protein receptor binding domain (RBD) substantially increase binding affinity (e.g., N501Y) in RBD-hACE2 complex (genetic data), while also being linked to rapid spread in human populations ...
COVID-19 Antigen Rapid Test Kit; the timer is provided by the user. Mucus from nose or throat in a test liquid is placed onto a COVID-19 rapid antigen diagnostic test device. COVID-19 rapid testing in Rwanda. An antigen is the part of a pathogen that elicits an immune response. Antigen tests look for antigen proteins from the viral surface.
A UK case-control study for 54,906 participants, testing positive for SARS-CoV-2 between 1 October 2020 and 29 January 2021 in the community setting (not including vulnerable persons from care centres and other public institutions), reported that patients infected with the Alpha variant (VOC 202012/1) had a hazard ratio for death within 28 days ...
The coronavirus can damage the heart, according to a major new study which found abnormalities in the heart function of more than half of patients.
In France, it made up about 15% of COVID-19 cases in December, but around 27 December it had increased to more than 60%. [341] [342] Researchers recommend sampling at least 5% of COVID-19 patient samples in order to detect Omicron or other emerging variants. [343]
BA.2.86 was first reported by Denmark and Israel. [1] [11] On 18 August 2023, when only six cases had been reported from four countries (Denmark, Israel, the United Kingdom and the United States), the British healthcare authorities noted that its almost simultaneous appearance in several countries still operating detailed genomic surveillance indicated that it likely already was spreading more ...
The Delta variant (B.1.617.2) was [3] [4] a variant of SARS-CoV-2, the virus that causes COVID-19. It was first detected in India on 5 October 2020. It was first detected in India on 5 October 2020. The Delta variant was named on 31 May 2021 and had spread to over 179 countries by 22 November 2021.
The Gamma variant (P.1) [a] was [6] [7] one of the variants of SARS-CoV-2, the virus that causes COVID-19. [8] This variant of SARS-CoV-2 has been named lineage P.1 and has 17 amino acid substitutions , ten of which in its spike protein, including these three designated to be of particular concern: N501Y , E484K and K417T.