title: Introduction: parasites.
authors.affiliation: Institute for Hygiene and Microbiology, Würzburg, Germany.
authors.forename: Klaus
authors.initials: K
authors.lastname: Brehm
authors.forename: Carsten G K
authors.initials: CG
authors.lastname: Lüder
mesh_terms: D000818:Animals; D056890:Eukaryota / Q000472:pathogenicity; D006376:Helminths / Q000472:pathogenicity; D006790:Host-Parasite Interactions; D006801:Humans; D010271:Parasites / Q000472:pathogenicity*