some patients, like jason barth, do seek out lifesaving h.i.v. care, which is now proven to prevent transmission of the virus to others. buydr. jerry jackson says m don't come, and so, new cases keep pping up in the keys. >> we should have zero. buininstead, last year, i thk we had 22 in our small little town. >> brangham: locals here joke that heading north in florida takes you straight into the deep south. that includes a place known as america's sweetest town: clewiston, florida, home of the sugar company u.s. sugar. you were so cute! and home to timothy "tad" dean. you remember any of the cheers from then? >> i do, but i'm not doi one now. >> brangham: i don't blame you. almost 8,000 people live in clewiston, on the banks of lake okeechobee, and dean jokes that every single one of them knows his name. they know his family... hi, lovies. >> brangham: ...and they know that he's gay. >> everybody in this tamn knows who >> brangham: you mean, the guy at the gas station? >> the gas staon. >> brangham: --the taqueria? >> the police department. the