A study by the National Environmental Engineering Research Institute (Neeri) in Nagpur has found a “very strong” correlation up to 85% — between the increase in the average day temperature and the reduction in Covid-19 spread for select cities in the country and for states like Maharashtra and Karnataka as a whole.
Neeri, a constituent laboratory of the Council of Scientific and Industrial Research, based its research on a mathematical model. It sourced Covid-19 case data from the World Health Organisation and temperature data from the Indian Meteorological Department. It studied the average real-time temperature and relative humidity and their relationship with the rising Covid-19 cases in Maharashtra and Karnataka.
The Neeri research said when the gross values of temperature and relative humidity were considered for these two states, an increase in the average day temperature from 25°C and above caused a reduction in Covid-19 cases.