The World Health Organization has issued a grim warning that the second year of Covid-19 was set to be "far more deadly", as Japan extended a state of emergency amid growing calls for the Olympics to be scrapped.

"We're on track for the second year of this pandemic to be far more deadly than the first," said WHO Director-General Tedros Adhanom Ghebreyesus.

The mood also darkened in Japan where the coronavirus state of emergency took in another three regions just 10 weeks before the Olympics, while campaigners submitted a petition with more than 350,000 signatures calling for the Games to be cancelled.

With Tokyo and other areas already under emergency orders until the end of May, Hiroshima, Okayama and northern Hokkaido, which will host the Olympic marathon, will now join them.

Japanese public opinion is firmly opposed to holding the Games this summer.

Swiss tennis star Roger Federer said Friday that "what the athletes need is a decision: is it happening or isn't it?"

"I would love to play in the Olympics... But if that doesn't happen due to the situation, I would be the first to understand," he added.

The pandemic has killed at least 3,346,813 people worldwide since the virus first emerged in late 2019, according to an AFP tally of official data.


Latest coronavirus stories


Meanwhile, an Indian state stricken by coronavirus after mass rallies were held for a key election has ordered a two-week lockdown in a bid to halt the spread.

All offices, stores and public transport in West Bengal were told to close for 15 days after the region reported its biggest spike yet in deaths and infections.

West Bengal along with a host of southern states are bearing the brunt of a Covid-19 surge in India that has taken the nation's infection total to nearly 25 million with more than 265,000 deaths, according to official figures.

India has started deploying Russia's Sputnik V coronavirus vaccine, the first foreign-made shot to be used in the country that has been reeling from an explosion in cases and deaths.

The first token batch of Sputnik vaccines - reportedly 150,000 doses - arrived on 1 May and a second delivery is expected in the next few days.

A number of leading India-based drugmakers have agreements for local production of Sputnik V with the aim to produce over 850 million doses of the jab per year.

India has been adding roughly as many new Covid cases daily as the rest of the world put together.