Protecting the most vulnerable, Eli Lilly’s bamlanivimab significantly reduced Covid-19 risk for nursing home residents in a Phase III trial. 

U.S. hospitals have been slow to embrace Covid-19 antibody drugs from Eli Lilly and Co. and Regeneron Pharmaceuticals Inc. that were authorized to reduce the risk of hospitalization, U.S. officials said.

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.

There are some questions about how effective Eli Lilly’s antibody neutralizing antibody bamlanivimab (LY-CoV555) will prove to be in the battle against Covid-19 due to labeling limitations.