Coronavirus LIVE: India cases rise to 46,476; global tally at 3,646,834

Coronavirus India update: India on Tuesday saw the biggest single-day spike with 3,900 cases and 195 deaths. The total number of coronavirus cases in India has reached 46,476 and 1,571 people have died so far, according to Worldometer data. The global tally of coronavirus infections currently stands at 3,646,211, and 252,407 people have succumbed to the infection so far.

While India begins to partially open up its economy in areas that are not much affected by the novel coronavirus, Congress leader Rahul Gandhi held a live video chat with Nobel Laureate Abhijit Banerjee on dealing with the economic fall out of the Covid-19 crisis. The sooner we exit the lockdown, the better, said the economist.

Coronavirus world update: At a video-conference summit, UN Secretary General Antonio Guterres said an estimated 7.5 billion euros ($8.2 billion) might be reqired to help find a vaccine and new treatments for Covid-19. Two hours into the EU-hosted summit, just over 5.4 billion euros had been pledged. About 100 research groups are pursuing vaccines, with nearly a dozen in early stages of human trials or poised to start them. But so far there's been little way to predict which vaccine, if any, will work safely, or even to name a front-runner.

Stay tuned for all coronavirus LIVE updates.