Maharashtra, Chhattisgarh, Karnataka, Uttar Pradesh, Delhi, Madhya Pradesh, Tamil Nadu, Gujarat, Kerala and Punjab, have shown a steep rise in the daily new Covid-19 cases.These 10 states account for 84.21% of the 1,26,789 new cases, the health ministry on Thursday said.The national weekly Covid-19 positivity rate has increased by 6.21% from 2.19 to 8.40% in the first seven days of March and April, the ministry added.India reports biggest rise in Covid cases so farIndia on Thursday reported a record single-day spike of 1,26,789 new coronavirus infections pushing the nationwide tally of cases to 1,29,28,574, according to the ministry data updated.Maharashtra has reported the highest daily new cases at 59,907.