title: Sexually transmitted diseases: epidemic cycling and immunity.
authors.forename: Bryan
authors.initials: B
authors.lastname: Grenfell
authors.forename: Ottar
authors.initials: O
authors.lastname: Bjørnstad
mesh_terms: D004777:Environment; D006069:Gonorrhea / Q000453:epidemiology / Q000276:immunology / Q000382:microbiology / Q000635:transmission; D006801:Humans; D015994:Incidence; D008954:Models, Biological; D011156:Population Density; D012725:Sexual Behavior / Q000502:physiology; D013587:Syphilis / Q000453:epidemiology* / Q000276:immunology* / Q000382:microbiology / Q000635:transmission; D013997:Time Factors; D014481:United States / Q000453:epidemiology