His parents had seen what happened to Black people who participated in the unethical Tuskegee syphilis study, where researchers let syphilis progress in Black men without treating them to justify treatment programs for them between 1932 and 1972.

So when Covid-19 vaccines became available, Moore and his family didn't rush out to get inoculated.

Some are motivated by politics, but officials at the White House and researchers at the Centers for Disease Control and Prevention have also expressed concerns about Black Americans who mistrust the medical community and are hesitant about getting the shot because of a long history of abuses such as what happened in Tuskegee.

There's also concern that many unvaccinated Americans don't oppose vaccination, but have trouble making the time to get vaccinated, or haven't felt strongly motivated to do so.

But as the Delta variant ravages unvaccinated populations, Moore recommended everyone continue taking precautions to avoid landing in his situation.

"If I can just help one person not go through the sorrow that I'm feeling," Moore said, "I'm fighting back tears right now because I'm thinking about the people that I've lost.