NEJM Interview: Edward Ryan on factors driving continued disease and death from cholera and opportunities for progress.

Edward Ryan is the director of global infectious diseases at Massachusetts General Hospital. Stephen Morrissey, the interviewer, is the Executive Managing Editor of the Journal. E.T. Ryan, F. Qadri, and J.A. Lynch. Global Cholera-Control Efforts — Progress and Remaining Challenges. N Engl J Med 2026;394:2177-2180.