U.S. biotechnology firm Moderna Inc. said Monday that a third shot of its coronavirus vaccine has been shown in a laboratory test to significantly increase antibodies that would fight off the highly transmissible Omicron variant.The announcement came as the United States is seeing another surge in coronavirus cases, with Omicron accounting for about two-thirds of new infections last week, according to the latest data from the Centers for Disease Control and Prevention.Preliminary data from lab tests in the Moderna study showed that a two-dose course of the vaccine, with each shot containing…READ FULL ARTICLE