First there was tuberculosis. Around the time of Lam’s disappearance, the Centers for Disease Control dispatched a team to stem a TB outbreak on Skid Row. “This is the largest outbreak in a decade,” the director of the LA County Department of Public Health said. Other than its size, though, the outbreak was unremarkable. At least until the Internet discovered a jarring fact: The name of the specific test being used to identify potential victims around L.A. was known as LAM-ELISA.