title: Special feature on evolution and genetics in medicine.
authors.affiliation: Department of Infectious Disease Epidemiology, Imperial College London, London, UK.
authors.forename: Brian G
authors.initials: BG
authors.lastname: Spratt
authors.affiliation: Department of Infectious Disease Epidemiology, Imperial College London, London, UK roy.anderson@imperial.ac.uk.
authors.forename: Roy M
authors.initials: RM
authors.lastname: Anderson
mesh_terms: D005075:Biological Evolution; D005823:Genetics; D006801:Humans; D012641:Selection, Genetic