The US Food and Drug Administration on Monday gave full approval to the COVID-19 vaccine made by Pfizer and German partner BioNTech for use in people over the age of 16.
It's the first such approval of a COVID-19 shot.
The vaccine has been authorised for emergency use since December and more than 204 million people in the United States have received it, based on Sunday's data.
But none of the three authorised COVID-19 vaccines had previously received full FDA approval.
Public health officials hope it will convince more unvaccinated Americans that Pfizer's shot is safe and effective.
Vaccine hesitancy among some Americans has hindered the United States response to the novel coronavirus.
"While millions of people have already safely received COVID-19 vaccines, we recognize that for some, the FDA approval of a vaccine may now instill additional confidence to get vaccinated," said Janet Woodcock, the US Food and Drug Administration's acting commissioner.
Roughly 51 per cent of Americans have been fully vaccinated so far, even as a recent surge of infections spurred by the contagious Delta variant ravages parts of the country with low vaccination rates.
Britain could bring in an Australian-style ban on social media for children under 16 as early as this year and close a loophole that left some AI chatbots outside safety rules, as part of government efforts to respond more quickly to digital risks.
At least 59 people died when Cyclone Gezani struck Madagascar last week, the disaster management office said on Monday, as it assesses the impact of the second tropical storm to hit the Indian Ocean island nation this year.
Heavy rain and wild winds have disrupted flights, trains, and ferries, and forced road closures across parts of New Zealand's North Island on Monday, taking out power to tens of thousands of residents.
Top executives from global AI giants will join several world leaders in New Delhi this week for a major artificial intelligence summit, at a time when India is trying to lure more investment in the industry.
Kenya's main international airport was experiencing flight delays on Monday due to a strike by members of the aviation union, operator Kenya Airports Authority said.
His Highness Sheikh Hamdan bin Mohammed bin Rashid Al Maktoum, Crown Prince of Dubai and the UAE's Deputy Prime Minister and Defence Minister, has offered his heartfelt condolences to the family of royal photographer Ramesh Shukla, who passed away on Sunday.