Tamil Nadu has inoculated 91.70 per cent of its population with first dose of vaccination against COVID-19 with 99,597 people getting covered during the 23rd mega vaccination camp held on Saturday, state Health Minister Ma Subramanian said. As much as 73.46 per cent were covered with the second dose as 5,54,088 people received the vaccines during the mass campaign, the Minister for Health and Family Welfare said in a press release.