DECATUR, Ga. — Malcolm Reid recently marked the anniversary of his HIV diagnosis on Facebook. “Diagnosed with HIV 28 years ago, AND TODAY I THRIVE,” he wrote in a post in April, which garnered dozens of responses. Reid, an advocate for people with HIV, said he’s happy he made it to age 66. But growing older has come with a [host of health issues\.]( He survived kidney cancer and currently juggles medications to treat HIV, high blood pressure, and Type 2 diabetes. “It’s a lot to manage,” he said. But Reid’s not complaining. When he was diagnosed, HIV was sometimes a death sentence. “I’m just ha…