vaccine May 5, 2021 5:48 pm Moderna: Booster Shot Shows Promising Response Against Variants The company said a 50-microgram dose of its vaccine on already-vaccinated individuals generated a promising immune response against COVID-19 variants found in South Africa and Brazil. Local 2:26 Celebs embrace ‘Garden of Time' theme at 2024 Met Gala 3:29 Donald Trump hush money trial: Judge fines former president for violating gag order 5:31 Columbia cancels university-wide commencement ceremony, as protests continue at other NYC campuses 1:36 WATCH: Some of the most talked about looks at the Met Gala 1:53 Holocaust survivors gather on Long Island