title: Changing patterns of parasitic disease: old enemies and new invaders--the battle wages on.
authors.forename: P M
authors.initials: PM
authors.lastname: Schantz
mesh_terms: D000818:Animals; D004351:Drug Resistance; D006801:Humans; D009894:Opportunistic Infections / Q000453:epidemiology; D010271:Parasites / Q000187:drug effects; D010272:Parasitic Diseases / Q000453:epidemiology*; D014195:Travel; D015047:Zoonoses