(CNN) Moderna, the first US company to begin Phase 3 clinical trials of a coronavirus vaccine in the US, increased its enrollment of minorities this week, but is still not even close to the levels requested by Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases. So far, 24% of study participants "are from communities of color," according to postings on the company's website and Twitter account. Last week, the company said 18% of the participants were minorities, which they said included "Black or African American, Latinx, American Indian, and Alaskan Native." To be representative, vaccine...