Future (year 2050) suitable habitat for Ixodes scapularis obtained with a maximum-entropy approach. (A-F) potential distributions for I. scapularis. Black dots = geographic locations of infected and non-infected ticks. Red = high suitable habitat vs. blue = no suitable habitat for I. scapularis. General circulatory models and climatic scenarios: (A) CCCMA-A2A; (B) CCCMA-BA2; (C) CSIRO-A2A; (D) CSIRO-BA2; (E) HADCM3-A2A; (F) HADCM3-B2A. Applied to general circulatory models and climatic scenarios.