Modi, 68, was administered the oath of office and secrecy by President Ram Nath Kovind at a glittering ceremony at the forecourt of majestic Rashtraparti Bhavan.
The Union Health ministry put the number of positive cases at 82, eight more since Thursday night, which includes the woman and a 76-year-old man from Karnataka who became the country's first coronavirus fatality besides 17 foreign nationals, Health Ministry officials said.