U.S. biotechnology firm Moderna Inc. said Monday that its authorized COVID-19 vaccine is expected to be protective against emerging strains of the novel coronavirus first identified in Britain and South Africa.But the company also said that it is advancing a vaccine booster candidate against the South Africa variant into preclinical studies, seeking to determine whether it will be more effective to strengthen antibodies against the variant and potential future variants."As we seek to defeat the COVID-19 virus, which has created a worldwide pandemic, we believe it is imperative to be proacti…READ FULL ARTICLE