The weekly positivity rate fell from 7.36 per cent the week before to 6.7 per cent, despite increased testing. By: Express News Service | Kolkata | Updated: September 7, 2020 2:05:28 pm The doubling rate of infection — calculated over seven-day average growth — slowed further, rising from 32.5 days the week before to 37 days. West Bengal continued to be on the mend this week as its Covid-19 discharge rate crossed 85 per cent on Sunday, with a total 1.54 lakh people having rec