The UN policy brief also warned that the environmental gains could be temporary if the cities re-open without policies to prevent air pollution and promote de-carbonisation.

The approval was given after its clinical trials on Covid-19 patients in India was found satisfactory by the expert committee, an official said.

The team, including researchers from the University of Arizona in the US, identified four leading drug candidates as the most potent and specific for fighting COVID-19.

It all started with a distress call from a girl who was stranded in Mumbai and wanted to be by the side of her ailing mother. Sabyasachi hasn’t stopped since then, going out of his way to help out people.

Plasma therapy aims at transfusing plasma (a component of blood) containing antibodies donated by a recovered COVID-19 patient to the serious coronavirus patients.

According to a World Health Organisation (WHO) report, the pandemic of 1918-1919 called the Spanish Flu was particularly virulent, and killed an estimated 40 million people worldwide.

According to the Delhi government's health bulletin on Saturday, there are over 25,000 active COVID-19 patients in Delhi out of which over 16,000 are in home isolation.