Warren Buffett, one of America’s best-known investors, is backing multiple pharmaceutical companies developing therapies aimed at curbing the ongoing global Covid-19 pandemic.

U.S. hospitals, weighing high demand and tight supplies, said they may limit use of the new Eli Lilly and Co. nantibody drug bamlanivimab to Covid-19 patients with multiple risk factors for serious illness or to those whose immune systems have not begun to fight the infection.

The number of coronavirus cases in the United States crossed the 11 million mark, according to a Reuters tally, as the third wave of Covid-19 infections surged across the country.

North Dakota became the 35th U.S. state to require face coverings be worn in public, as governors across the country grapple with a surge in coronavirus infections that threatens to swamp their healthcare systems.

Dr. Anthony Fauci, the top U.S. infectious disease expert, said he has had no contact with President-elect Joe Biden’s coronavirus transition team and sees no reason to quit to join that effort when there is so much to do now to fight the surging pandemic.

U.S. Supreme Court justices signaled they are unlikely to strike down the Obamacare healthcare law in a legal challenge brought by Texas and 17 other Republican-governed states and joined by President Donald Trump’s administration.

There were more than 59,000 Covid-19 patients in hospitals across the United States on Nov. 9, the country’s highest number ever of in-patients being treated for the disease, with new infections at record levels for the sixth consecutive day.

Eli Lilly

U.S. regulators authorized emergency use of the first experimental antibody drug for Covid-19 in patients who are not hospitalized but are at risk of serious illness because of their age or other conditions.

The coronavirus pandemic raged across the United States as the country elected a new president, with the daily number of new infections hitting record highs for four straight days.

Anthony Fauci, director of the U.S. National Institute of Allergy and Infectious Diseases, greeted news about the vaccine against the deadly coronavirus that Pfizer Inc. is developing as “a big deal” and said the United States could have vaccine doses ready to administer to people before the end of 2020.