Was the CDC’s Guidance on Ditching Masks Too Hasty—Especially for Folks Living With HIV? Courtesy of the subject Mary Glenn, 67, of Jacksonville, Florida, has been living with HIV since 1990. She was also among those first vaccinated against COVID in early February, because she was part of the Pfizer vaccine trial. In fact, Glenn was one of the nearly 10% of trial participants who were Black. (Black folks have historically been underrepresented in all sorts of clinical trials.) Now, Glenn is enjoying the relative freedom that comes with being fully vaccinated. “I’m taking my mask off when I’m outdoors, and I’m venturing out to restaurants and stores as needed,” she said. “I miss being around others so much.”