|
Indian Variant COVID
The Delta variant (B.1.617.2) was a variant of SARS-CoV-2, the virus that causes COVID-19. It was first detected in India in late 2020. The Delta variant was named on 31 May 2021 and had spread to over 179 countries by 22 November 2021. The World Health Organization (WHO) indicated in June 2021 that the Delta variant was becoming the dominant strain globally. It has mutations in the gene encoding the SARS-CoV-2 coronavirus spike protein, spike protein causing the substitutions T478K, Variants of SARS-CoV-2#P681R, P681R and Variants of SARS-CoV-2#L452R, L452R, which are known to affect transmissibility of the virus as well as whether it can be neutralised by antibodies for previously circulating variants of the COVID-19 virus. In August 2021, Public Health England (PHE) reported secondary attack rate in household contacts of non-travel or unknown cases for Delta to be 10.8% ''vis-à-vis'' 10.2% for the SARS-CoV-2 Alpha variant, Alpha variant; the case fatality rate for those ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deltacoronavirus
''Deltacoronavirus'' (Delta-CoV) is one of the four Genus, genera (''Alphacoronavirus, Alpha-'', ''Betacoronavirus, Beta-'', ''Gammacoronavirus, Gamma-'', and ''Delta-'') of coronaviruses. It is in the subfamily ''Orthocoronavirinae'' of the family ''Coronaviridae''. They are Viral envelope, enveloped, Sense (molecular biology), positive-sense, Base pair, single-stranded RNA viruses. Deltacoronaviruses infect mostly birds and some mammals. While the alpha and beta genera are derived from the Bat virome, bat viral gene pool, the gamma and delta genera are derived from the avian and pig viral gene pools. Genetic recombination, Recombination appears to be common among deltacoronaviruses.Lau SKP, Wong EYM, Tsang CC, Ahmed SS, Au-Yeung RKH, Yuen KY, Wernery U, Woo PCY. Discovery and Sequence Analysis of Four Deltacoronaviruses from Birds in the Middle East Reveal Interspecies Jumping with Recombination as a Potential Mechanism for Avian-to-Avian and Avian-to-Mammalian Transmission. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
