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  • 2022-11-25 (xsd:date)
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  • Covid-19 variants including Delta are real (en)
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  • It’s called the Delta Covid-19 variant because you’d have to be completely asleep to believe it. Like other viruses, the one that causes Covid-19 has variants, which are named after Greek letters. Types of brain waves are also named this way, which is why there is a delta wave that occurs when people are sleeping. There’s plenty of evidence that the Delta variant is real, including the fact that it’s been sequenced multiple times, has infected and killed people. A post on Facebook says: It’s called the Delta variant because you have to be completely asleep to believe it which is accompanied by a diagram of human brainwaves, including the delta brainwave which it labels as deep sleep. It seems to be referring to the Delta variant of Covid-19. As we have written before, Covid-19 virus variants are real. All viruses mutate over time and SARS-CoV-2, which causes Covid-19, is no exception. Key variants of SARS-CoV-2 are named after letters of the Greek alphabet, which the World Health Organisation introduced to avoid variants being named after the places they were detected and to simplify public communications. Different types of brain waves, the oscillating electrical voltages in the brain which appear as waves when measured by an EEG, are also named after letters of the Greek alphabet. Delta waves usually occur when adults are asleep. The fact that both are named after the Greek letter delta is just a coincidence. Most virus mutations will make little difference to how a virus behaves but some may cause alterations in features such as transmissibility, severity or ability to evade vaccines. It is these variants, such as the Delta variant, that may become known as ‘variants of concern’ or ‘variants of interest’. If SARS-CoV-2 is present in a sample, the specific variant can be identified through analysis such as ‘genomic sequencing’ and ‘genotyping’. You can read more about those processes here. The genetic information of the Delta variant has been sequenced multiple times by various scientists across the world. We have written many times before about how Covid-19 is real. There’s plenty of evidence, including the multiple times SARS-CoV-2 has been sequenced and isolated, and the number of deaths it has caused. Image courtesy of Milad Fakurian This article is part of our work fact checking potentially false pictures, videos and stories on Facebook. You can read more about this—and find out how to report Facebook content—here. For the purposes of that scheme, we’ve rated this claim as false because the Delta variant of Covid-19 is real. (en)
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