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The Coronavirus pandemic is now the world's most deadly sickness, infecting millions of people around the world. The pathogenic strain of 2019-nCoV viruses changed over time to evolving delta and omicron virus variants that are more virulent and contagious than the parent virus. Despite repeated attempts to limit the epidemic and the discovery of powerful vaccination, Covid-19 continues to spread. The most severe variation of the coronavirus is the delta variant, which has been declared a variant of concern by the World Health Organization and the Centers for Disease Control and Prevention. COVID-19 variations are fast emerging, causing worldwide biomedical researchers and public health decision-makers to respond quickly to boost research in order to rescue humans from great havoc.
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