The first wave of Covid-19, that swept India in early 2020, was a gruelling experience for Dr Sangram Kapale and his colleagues. "The kind of mental pressure we were all going through is very difficult to put in words," he says. "It was about saving lives with minimal resources. We had a lack of medicine, beds, oxygen ... The lack of skilled manpower, like paramedics, was another issue. We were forced to use medical students who had no practical experience of handling patients."