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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; [10] 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 ...
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.
The Delta variant, also known as B.1.617.2, G/452R.V3, 21A [75] or 21A/S:478K, [98] was a globally dominant variant that spread to at least 185 countries. [138] 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 ...
During January 2022, in Denmark the BA.2 variant grew at ~0.10 per day (+11% per day) as a ratio to BA.1 (the legacy Omicron variant), and became the dominant strain in week 2, 2022. [161] In the United Kingdom, the BA.2 variant was growing at ~0.11 per day (+12% per day) as a ratio to BA.1.
Pneumococcal pneumonia kills about 1 in 20 older adults infected with the bacteria, according to the CDC. ... The CDC reported that KP.3.1.1 was the dominant COVID-19 variant circulating the U.S ...
The dominant coronavirus strain in the U.S. spreads faster than its predecessors, is adept at escaping immunity and might cause more serious disease. The Omicron subvariant spreading across the U ...
A smaller Omicron surge in spring is also possible.) [120] As it is, the variant is projected to become the dominant strain within a week. [ 121 ] The R number for Omicron in the UK is estimated to be between 3 and 5, Dr. Susan Hopkins , chief medical advisor at the UK Health Security Agency reported.
The Delta variant is more transmissible than the SARS-CoV-2 ancestral strain as well as the viruses that cause MERS, SARS, Ebola, the common cold, the seasonal flu and smallpox, the report said.