Chennai, July 31: Tamil Nadu did not report any new COVID cases. Total number of cases in the State stood at 36,10,628. Test positivity rate (TPR) in Tamil Nadu stood at 0.6% after 781 people were tested in the past 24 hours.Five cases were reported on Saturday. Active cases of COVID-19 in the State stood at 7. Total recoveries reached 35,72,540. No more COVID-related fatality was reported in the past 24 hours. Toll remained at 38,081.