Putting all publicly available tweets with the word “cholera” and the hashtag “#cholera” on a timeline, researchers at HMS were able to show a surge in cholera-related tweets early in the epidemic. John Brownstein, HMS assistant professor of pediatrics at Children’s Hospital Boston, is one of the founders of HealthMap, which aggregates global information about infectious diseases. Rumi Chunara, HMS research fellow in pediatrics at Children’s Hospital Boston and at HealthMap, was also quoted.