AY.4.2 variant Subject – Science and Tech Context – AY.4.2 variant is rapidly spreading. Concept – Viruses constantly mutate. And the same is the case with SARS-CoV-2, the novel Coronavirus that causes Covid-19. The AY.4.2 is a sublineage of the Delta variant of the SARS-Co-V-2 virus or B.1.617.2. This sub-lineage contains two mutations […]