New Delhi, March 1 -- A top Canada-based epidemiologist has cautioned India to guard against a possible surge in coronavirus cases in the months ahead as the summer forces people indoors.

The warning came from Toronto-based Prabhat Jha, epidemiologist at the University of Toronto's Unity Health St Michael Hospital and executive director of the Centre for Global Health Research.

Jha is also the lead investigator in the Million Death Study conducted in India in collaboration with the Registrar General of India.

Jha told HT that the principal "element for transmission" is now considered to be "an indoor, closed, less ventilated space".

Just as there was a winter peak in countries such as Canada as falling temperatures drove people indoor...