A Mysuru youth, who had tested positive for Covid-19 on June 2, has been found to be infected with the Delta-plus variant of coronavirus — B.1.617.2.1 or AY.1. “Two samples have tested positive for the Delta-plus variant as of June 22 at the National Centre for Biological Sciences in Bengaluru. One of the samples is from Tamil Nadu, so Karnataka has actually only one case,” said health minister K Sudhakar.