SARS COV-2 is constantly mutating: A never-ending surge causing threat to mankind

Abstract

Coronaviruses has been spreading across the planet for more than two years now. Emerging new competent variants makes the surge never ending. With over thirty crore cases as on first week of January 2022 this virus has caused serious havoc to humanity. Due to evolutionary selection, new variants become predominant. These new variants are associated with higher transmissibility, increased severity, re infection, immune and diagnostic escapes. It has been prescribed that emergence of herd immunity either achieved by vaccination or by natural infection will be the game changer. Nonetheless COVID appropriate behavior has to be strictly followed. We take the opportunity to describe the variants which created and are still creating havoc all along the world.