title: Plague and leprosy in the Middle Ages: a paradoxical cross-immunity?
authors.forename: S R
authors.initials: SR
authors.lastname: Ell
mesh_terms: D005060:Europe; D049691:History, Medieval; D006801:Humans; D007109:Immunity; D007918:Leprosy / Q000266:history* / Q000276:immunology; D010930:Plague / Q000266:history* / Q000276:immunology