An antiviral pill that people could take at home to reduce their symptoms and speed recovery could prove groundbreaking, easing the crushing caseload on U.S. hospitals.
The increasingly lethal turn has filled hospitals, complicated the start of the school year, delayed the return to offices and demoralized health care workers.
The European Council updates the list based on criteria relating to coronavirus infection levels. It gets reviewed every two weeks.
Across the country, states are struggling to fend off the Delta variant -- the most contagious strain of coronavirus yet.
Cases bottomed out in June but took about six weeks to go back above 100,000, despite a vaccine that has been given to more than 70 per cent of the adult population.
Cities including New York and Los Angeles are imposing new restrictions, such as demanding proof of vaccination for entering indoor venues including restaurants and gyms.
White House Press Secretary Jen Psaki said that US is eager to get vaccines and continue assistance to the people of India and want to continue to be a part of the arsenal of solving the pandemic.
Published reports had said hundreds of celebrities, politicos and others were expected at Obama's sprawling house.
The new policy, announced by New York City Mayor Bill de Blasio, will be phased in over the coming weeks.
The order applies to everyone, regardless of vaccination status and starts on August 3.
While this week US saw a surge in Americans getting the shot, as covid-19 cases rise driven largely by the more infectious delta variant, still only about 60% of Americans are fully vaccinated.
Company members who are not vaccinated, including those under the age of 12, must continue to wear masks, practice physical distancing when possible and undergo testing at least twice a week.
It was the latest sign that the White House is having to recalibrate its thinking around the coronavirus pandemic as the more infectious variant surges across the US.
Dr. Anthony Fauci noted that some local jurisdictions where infection rates are surging are already calling on individuals to wear masks in indoor public spaces regardless of vaccination status.
Stressing the need for people to get vaccinated, he said "virtually all" of the Covid deaths and hospitalisations in the country are among the unvaccinated.