1 Aaron S. Bernstein is with Boston Children's Hospital and the Center for Climate, Health and the Global Environment, Harvard T. H. Chan School of Public Health, Boston, MA. Julia R. Malits is with the Departments of Emergency Medicine at Massachusetts General Hospital and Brigham and Women's Hospital, Boston, MA. Gregory A. Wellenius is with the Center for Climate and Health, Boston University School of Public Health, Boston, MA.