Viral Variants: Race for Survival

The dreaded delta, delta+, and lambda variants of SARS-CoV-2. Are these variants really deadlier than the first identified strain of SARS-CoV-2 in patients from Wuhan or the other over 800 variants? Do these variants cause more severe disease or symptoms? What is the mortality rate caused by dreaded delta variants since first identified in February 2021 in India? This information is incorrect, as one of the Delta variants did not originate in India, nor did it first appear in 2021, but has been around since the beginning of the pandemic (Fig. 1); it just wasn’t a predominant variant [1].