“Mine and my team’s work may be a drop in the ocean — but a drop nevertheless,” he said. With India’s health care system overwhelmed by India’s unprecedented COVID surge, which is bringing about 400,000 new cases and thousands of deaths each day, desperate relatives and friends of the infected have resorted to sending S.O.S. messages on social media. And many of those calls are being answered. Some people need medical oxygen, which is nearly impossible to find in Delhi, the capital. Others are hunting for medicine that goes for high prices on the black market, or for ventilators that are exceedingly rare. The pleas are reaching tech-savvy engineers, lawyers, N.G.O. workers, politicians, doctors and even tuk-tuk drivers, who have mobilised online to help the sick, some of them hundreds of miles away. Collectively, they have formed grass-roots networks that are stepping in where state and national governments have failed. It is a role that Srinivas, 38, has played before in times of crisis. As the president of the opposition Indian National Congress party’s youth league, he has provided support after natural disasters, including earthquakes and floods. He has worked to get textbooks to underprivileged children and medicine to people who couldn’t afford it. Early last year, when the pandemic first struck and India locked down, Srinivas galvanised young volunteers across the country who distributed food for stranded migrants, along with more than 10 million masks. He now heads a team of 1,000 people, including 100 in Delhi, the center of the current outbreak. “I have grown up on Mahatma Gandhi’s ideals,” said Srinivas, who aspired to be a cricket player before entering politics. “I cannot believe it that I am out here today, trying to help so many people.”