title: [Seroprevalence of Lyme disease in Navarra, Spain].
abstract: OBJECTIVE
  To establish the seroprevalence of infection by Borrelia burgdorferi in Navarre (Spain).
  
  
  METHODS
  Serum samples of 1,429 individuals considered representative of the population of Navarre were analyzed. The individuals were recruited from a list issued by the government of Navarre. The subjects were stratified according to three variables: age, sex and the health zone to which they belonged. In all cases a written informed consent was obtained.
  
  
  RESULTS
  The global seroprevalence in Navarre was 4.4%. Being a stockbreeder (13.2%) in contact with cows and sheep was found to be a risk factor after the analysis of different variables such as sex, age, contact with cattle, profession, living in rural areas, a prior history of having been bitten by a tick or the size of the city.
  
  
  CONCLUSIONS
  Navarre provides suitable conditions for the prevalence and development of Lyme disease, with a global seroprevalence or 4.4%. No differences were found between the different areas analyzed, while being a stockbreeder represents a risk factor.
authors.affiliation: Servicio de Medicina Interna, Hospital San Juan de Dios, Pamplona, Navarra, España. julio.oteiza@unavarra.es
authors.forename: Julio
authors.initials: J
authors.lastname: Oteiza-Olaso
authors.forename: Gregorio
authors.initials: G
authors.lastname: Tiberio-López
authors.forename: Víctor
authors.initials: V
authors.lastname: Martínez de Artola
authors.forename: Tomás
authors.initials: T
authors.lastname: Belzunegui-Otano
mesh_terms: D000293:Adolescent; D000328:Adult; D000907:Antibodies, Bacterial / Q000097:blood*; D025065:Borrelia burgdorferi / Q000276:immunology*; D005260:Female; D006801:Humans; D008193:Lyme Disease / Q000097:blood* / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D016036:Seroepidemiologic Studies; D013030:Spain / Q000453:epidemiology; D055815:Young Adult
chemical_list: D000907:Antibodies, Bacterial