Controlling the spread of Covid-19 in India may become a greater challenge with the progression of the season towards monsoon, post-monsoon, and thereafter, winter, with a continuous fall in temperature, claims a study conducted jointly by researchers at IIT-Bhubaneswar and AIIMS-Bhubaneswar.

Every degree rise in temperature corresponds to a 0.99 per cent decrease in the number of cases and an increase in doubling time by approximately 1.13 days, implying a slowing down of spread, said the study titled "Covid-19 spread in India and its dependence on temperature and relative humidity".