An Indian-American non-profit body has raised nearly USD4.7 million through social media towards COVID-19 relief efforts in India as the country battles a severe second wave of the pandemic. "This is a collective effort that can save lives, defeat hunger, assure distressed people, and help India in its decisive fight against COVID-19," Sewa International USA said. On Tuesday, Sewa collected a shipment of 2,184 oxygen concentrators to be sent to India. In less than 100 hours of launching the fund-raising campaign, more than 66,700 Indian-Americans came out to raise over USD4.7 million for COVID-19 relief efforts in India, it said. Over the last few years, Sewa International USA has emerged as the top Indian-American charity organisation in the US.