Epidemiology and disease ecology, particularly of antimicrobial resistant pathogens. The Wikipedia entry for it gives the definition I've always seen: "An ecol

Epidemiology and disease ecology, particularly of antimicrobial resistant pathogens. The Wikipedia entry for it gives the definition I've always seen: "An ecological fallacy is a formal fallacy in the interpretation of statistical data that occurs when inferences about the nature of individuals are deduced from inferences about the group to which those individuals belong."