gracie7

CEBU CITY, PHILIPPINES—The dealer’s hands move quickly as he dispenses small vials from the waistband of his shorts, his front pockets bulging from the weight of coins and small bills. From his back pocket, he hands out syringes or collects them. Occasionally, he uses the t-shirt slung over his shoulder to wipe away the beads of sweat that made his goatee glisten.

The shanty where he works—a small room full to bursting with people—is home to one of Cebu’s many “shooting galleries,” ...