News Regeneron says its cocktail can help prevent infection; Britain starts opening up: Live COVID-19 updates April 12, 2021April 12, 2021Elinor Aspegren, USA TODAYComments Off on Regeneron says its cocktail can help prevent infection; Britain starts opening up: Live COVID-19 updates Regeneron said a Phase 3 trial of its antibody cocktail offered strong protection for people living with someone infected. Latest COVID news.