The number of Covid cases in Kerala jumped nearly 30 per cent over the past 24 hours to over 31,000 as the state government flagged an 'Onam spike'. The state recorded 215 deaths along with a test positivity rate of 19.03 per cent. The state on Wednesday reported 31,445 fresh cases, pushing its total infection count to 38,83,429 and fatalities to 19,972.