HOUSTON – A couple of big-name frontrunners in the race for a coronavirus vaccine, Moderna and Pfizer, began part of their experimental trial here in Houston. Black and Hispanic communities are not signing up for vaccine trialsAccording to the Texas Center for Drug Development, less than 8% of the participants in the vaccine trial in Houston are Black. “That’s why this is such an important part of making that happen," said Dr. Veronica Garcia Fragoso, senior clinical research investigator. In the Tuskegee study, researchers were only studying black men and they were not transparent with their study. “We value the time and travel,"said Dr. Lisa Holloway, clinical research investigator with TCDD.