Pune: Most anti-body evasive strain new Covid variant, XBB, a recombinant lineage between two Omicron sublineages BJ.1 and BA.2.75, has already notched up over 70 cases across Maharashtra, West Bengal, Odisha and Tamil Nadu, as per health officials.The XBB variant belongs to the Omicron lineage, scientifically known as BA.2.10 and