title: An unusual case of anti-Borrelia burgdorferi immunoglobulin G seroconversion caused by administration of intravenous gammaglobulins.
abstract: Administration of gammaglobulins to individuals without specific anti-Borrelia burgdorferi antibodies may lead to immunoglobulin G (IgG) conversion as detected by enzyme-linked immunosorbent assay (ELISA). In some cases however, complementary techniques such as Western blot or avidity will be of prime importance in distinguishing the start of an infection from the passive immunization induced by the gammaglobulins. In all cases, the key element before reaching conclusions in relation to any of these investigations remains the confrontation between the clinical context and the biological findings. This is the scenario that has been followed in our observation.
authors.affiliation: Service de Biopathologie et laboratoire de référence Borreliose de Lyme, Clinique Saint-Pierre, Groupe de Recherche et d'Information sur la maladie de Lyme (RILY), Avenue Reine Fabiola 9, Ottignies 1340, Belgium. v.luyasu@intervweb.be
authors.forename: V
authors.initials: V
authors.lastname: Luyasu
authors.forename: S
authors.initials: S
authors.lastname: Mullier
authors.forename: O
authors.initials: O
authors.lastname: Bauraind
authors.forename: M
authors.initials: M
authors.lastname: Dupuis
mesh_terms: D000907:Antibodies, Bacterial / Q000032:analysis; D015153:Blotting, Western; D025065:Borrelia burgdorferi / Q000276:immunology; D002675:Child, Preschool; D003429:Cross Reactions; D004797:Enzyme-Linked Immunosorbent Assay; D005188:False Negative Reactions; D006801:Humans; D007116:Immunization, Passive; D007074:Immunoglobulin G / Q000097:blood / Q000134:cerebrospinal fluid / Q000627:therapeutic use; D007075:Immunoglobulin M / Q000097:blood / Q000134:cerebrospinal fluid; D016756:Immunoglobulins, Intravenous / Q000627:therapeutic use*; D008193:Lyme Disease / Q000134:cerebrospinal fluid / Q000473:pathology / Q000628:therapy*; D008297:Male; D012698:Serologic Tests; D016896:Treatment Outcome
chemical_list: D000907:Antibodies, Bacterial; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D016756:Immunoglobulins, Intravenous