Shares of the social network finished up 4 per cent at $355.64 at the close of trading on Monday, giving the company a market cap of just over $1 trillion.
Researchers from the University Hospitals of Strasbourg in France followed 97 Covid-19 patients who lost their sense of taste and smell for an entire year.
The automaker has been under court receivership since April as its parent, Mahindra & Mahindra (M&M) failed to attract an investor amid the prolonged pandemic.