Pharmaceutical company Moderna told Bloomberg on Thursday that it’s on pace to begin the final-stage clinical trial of its vaccine for the novel coronavirus that causes COVID-19 by July. Moderna was the first company to begin human clinical trials of its vaccine candidate in the U.S., and the last stage of its study will include 30,000 people and be conducted in partnership with the U.S. National Institute of Allergy and Infectious Diseases (NIAID).