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Delta (B.617.2) First identified in India in late 2020, the delta variant soon spread across the globe. It became the dominant variant of SARS-CoV-2 until the emergence of omicron in December 2021.
However, on July 9, Public Health England reported that the Delta variant in England had a case fatality rate (CFR) of 0.2%, while the Alpha variant's case fatality rate was 1.9%, although the report warns that "case fatality rates are not comparable across variants as they have peaked at different points in the pandemic, and so vary in ...
The Delta variant, also known as B.1.617.2, G/452R.V3, 21A [75] or 21A/S:478K, [97] was a globally dominant variant that spread to at least 185 countries. [137] It was first discovered in India . Descendant of lineage B.1.617, which also includes the Kappa variant under investigation, it was first discovered in October 2020 and has since spread ...
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Alphacoronaviruses (Alpha-CoV) are members of the first of the four genera (Alpha-, Beta-, Gamma-, and Delta-) of coronaviruses. They are positive-sense, single-stranded RNA viruses that infect mammals, including humans. They have spherical virions with club-shaped surface projections formed by trimers of the spike protein, and a viral envelope.
The delta variant now accounts for more than 83 percent of Covid-19 cases, the Centers for Disease Control and Prevention said Tuesday. Just a month ago, the variant accounted for just over 30 ...
With the Delta variant driving a surge in COVID-19 infections, health officials warn the threat of the contagious variant is ‘serious’ as infected patients crowd hospital beds in hard-hit regions.
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