MUMBAI, Aug. 7 -- Maharashtra recorded 11,514 Covid-19 cases, the state's highest single-day spike in infections, on Thursday, taking its tally to 479,779. The positivity rate, however, remained low - 15.45% - as the state conducted 74,480 tests, highest in 24 hours since the first coronavirus case was reported in Maharashtra on March 9. The overall positivity rate of the state stands at 19.28%, with 2,487,990 tests being conducted so far....