In the course of the COVID-19 pandemic, thousands of variants have been identified, four of which are considered “variants of concern” by the World Health Organization: Alpha, Beta, Gamma, and Delta, all closely tracked by scientists on websites such as GiSAID and CoVariants. Delta is by far the most contagious some 97 percent more sothan the earliest circulating virus. Mutations generally appear randomly and spontaneously, rather than in a systematic way and most mutations either kill the virus or they die out from lack of spread, victims of an infected person isolating or passing the germs to a small number of others who then stay home .Is there a Variant worse than delta?

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