After about 69 days, Tamil Nadu recorded an increase in the cases of COVID-19 since the continuous dip in the cases after the second wave. While Chennai is reporting a spike in the cases after July 26, when 25,365 samples were tested in the city and 122 cases were reported, the testing stood at 24,239 samples when 164 cases were reported on Thursday. Thus, the Greater Chennai Corporation officials say that the testing of samples is being increased as more cases are being reported.