On 17 June, daily testing crossed 25,000 in the state for the first time. Tamil Nadu also became the first state in the country to cross the 20,000 test per day mark. Total tests to date was 773,707. Most of tests were being done in Chennai (23% of all samples) and neighboring districts. As of 8 June, the district with highest positivity rate was Chennai (18.13%), followed by Chengalpattu (13.28%), Tiruvallur (11.96) and Ariyalur (9.62%).
