March 25, 2021 4:36 pm Mass Vaccinations Key in Fighting Emerging COVID-19 Variants, Epidemiologist Says NBC 7’s Jackie Crea heard concerns about the Brazilian variant from a UC San Diego epidemiologist. US & World Videos 1:54 1 dead in Carlsbad house fire, another injured after jumping out second-story window 2:46 San Diego beach visitors deal with chilly conditions Memorial Day weekend 0:46 Carlsbad house fire kills 1 person, injures another, closes roads 5:26 Scripps researchers use the ocean floor to study climate change 3:37 Scripps scientists chosen as finalists by NASA in climate change mission