Tuberculosis (TB), an infectious disease targeting the lungs, is the second biggest killer, globally. In 2015, 1.8 million people died from the disease, with 10.4 million falling ill, despite the development of vaccines and effective drug treatment. At one point, the United Nations predicted that TB would be eliminated worldwide by 2025, but treatment options remain surprisingly sparse. The only vaccine for TB was developed nearly a century ago, and offers limited protection. Even worse, patients are becoming increasingly resistant to available drugs.