A dry run for Covid vaccine will be held in all states on Saturday, January 2, sources told NDTV as authorities hinted that approval for a vaccine could be around the corner. On Thursday, the Union Health Secretary chaired a high-level meeting with all states ad Union Territories to discuss the issue. This is the second dry run being conducted in the country -- the first was held on December 28 and 29 in Assam, Andhra Pradesh, Punjab and Gujarat and had gone off without a hitch, the health ministry said.