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What does the Delta COVID-19 mutant strain look like?
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What does the “Delta” COVID-19 mutant strain look like? Russian Institute of Virology Releases Latest Photos.
According to a report by RIA Novosti, on the 25th local time, the Russian National Science Center for Vector Virology and Biotechnology announced for the first time a photo of the new coronavirus mutant strain “Delta”, which was taken by an electron microscope.
According to reports, the “Delta” mutant strain in the photo was artificially cultivated on the culture of African green monkey kidney epithelial cells. It is a real image of the COVID-19 mutant strain Delta taken by an electron microscope.
According to the information released by the World Health Organization, the “Delta” COVID-19 variant strain was first discovered in India in October 2020.
Compared with other strains, it has the characteristics of a short incubation period and strong virus toxicity. Because the “Delta” COVID-19 variant strains remain in human organs for a long time, it is more difficult to diagnose whether the patient has fully recovered.
SARS-CoV-2 Delta variant:
From Wikipedia, the free encyclopedia
This article is about a variant of the virus that causes COVID-19. It is not to be confused with the Deltacoronavirus (genus) grouping of coronavirus species that affects birds and non-human mammals.
For lineage B.1.617.1, see SARS-CoV-2 Kappa variant.
The Delta variant[note 1] is 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 163 countries by 24 August 2021. The World Health Organization (WHO) indicated that the Delta variant is becoming the dominant strain globally.[when?]
It has mutations in the gene encoding the SARS-CoV-2 spike protein causing the substitutions T478K, P681R and 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. It is thought to be one of the most transmissible respiratory viruses known. 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 Alpha variant; the case fatality rate for those 386,835 people with Delta is 0.3%, where 46% of the cases and 6% of the deaths are unvaccinated and below 50 years old. Immunity from previous recovery or COVID-19 vaccines are effective in preventing severe disease or hospitalisation from infection with the variant.
On 7 May 2021, PHE changed their classification of lineage B.1.617.2 from a variant under investigation (VUI) to a variant of concern (VOC) based on an assessment of transmissibility being at least equivalent to B.1.1.7 (Alpha variant); the UK’s SAGE using May data estimated a “realistic” possibility of being 50% more transmissible. On 11 May 2021, the WHO also classified this lineage VOC, and said that it showed evidence of higher transmissibility and reduced neutralisation. On 15 June 2021, the Centers for Disease Control and Prevention (CDC) declared Delta a variant of concern.
The variant is thought to be partly responsible for India’s deadly second wave of the pandemic beginning in February 2021. It later contributed to a third wave in Fiji, the United Kingdom and South Africa, and the WHO warned in July 2021 that it could have a similar effect elsewhere in Europe and Africa. By late July, it had also driven an increase in daily infections in parts of Asia, the United States, Australia, and New Zealand.…….
(source:internet, reference only)