Mr. Dr Tedros added that globally, the number of new cases per week has almost doubled over the past two months.
The death toll in the United States due to COVID-19 is over 560,000, accounting for more than 1 in 6 of the world's COVID-19 deaths, by far the highest reported by any country.
In Brazil, some 3,000 deaths are reported every day, accounting for nearly a quarter of the deaths reported daily in the world.
As cases surge, hospitals are running out of critical sedatives.
Getting vaccines to everyone around the world is a challenging, but necessary, undertaking.
"To date, no unexpected patterns have been identified in case demographics or vaccine characteristics", the CDC told CNN via email, but the agency said it will continue to look for indications of who is most prone to become infected despite having been vaccinated. The number of cured/discharged/migrated patients increased by 1,23,354 to 1,26,71,220.
With the 249 new cases, the province's total rises to 37,873 cases. It was 83 days in September past year.
With 234,692 new infections reported on Saturday, India has close to three times the daily cases of the US.
Double mutant now most prevalent COVID-19 variant in India
The drop in infection levels across the United Kingdom marks a contrast to rising case rates in other parts of the world. He was expected to spend four days in the country but Downing Street said the bulk of the work could be done in one day.
The WHO recently described the supply situation as precarious.
"First is that people are not wearing masks and gathering more".
It is the latest grim milestone after the novel coronavirus surfaced in central China in December 2019 and went on to infect more than 139 million people, leaving billions more under crippling lockdowns and ravaging the global economy.
Campaigning for the ongoing assembly elections in four states and Puducherry have continued despite the massive surge in COVID-19 cases in India.
In recent days, the USA and some European countries put the use of Johnson & Johnson's COVID-19 vaccine on hold while authorities investigate extremely rare but risky blood clots.
AstraZeneca's vaccine has likewise been hit with delays and restrictions in some countries because of a clotting scare.
"Immunity is not guaranteed by past infection, and vaccinations that provide additional protection are still needed for those who have had Covid-19".