title: [Leptospirosis frequency and socio-demographic characteristics associated in febrile patients from northern Perú].
abstract: INDRODUCTION: Leptospirosis is a frequent cause of febrile illness around the world, particularly in tropical and subtropical areas such as Perú.
  
  
  OBJECTIVE
  To estimate the frequency and socio-demographic characteristics associated with leptospirosis in febrile patients in northern Perú.
  
  
  METHODS
  A cross sectional study was conducted from January to December 2014 in 143 fever cases admitted to the Hospital Regional Lambayeque, Perú. Structured for socio-demographic information and sanitation questionnaire was used. Serum samples were examined to quantitatively determine the presence of IgM antibodies to leptospira using ELISA IgM.
  
  
  RESULTS
  The frequency was 26.6% (95% CI 19.3 to 33.8) and independently associated features were: be between 20-54 years (OR: 3.36, 95% CI 1.17 to 9, 64), work in agriculture-livestock (OR: 6.15, 95% CI 1.99 to 19.05),contact with animals (OR: 4,13, IC 95%: 1,76-9,65) and consumption of unsafe water(OR: 3,33, IC 95%: 1,49-7,43).
  
  
  CONCLUSIONS
  This study reveals a high frequency of leptospirosis among febrile patients from northern Perú. These results indicate the need to investigate routinely leptospirosis in febrile patients, especially those exhibiting risk characteristics.
authors.forename: Heber
authors.initials: H
authors.lastname: Silva-Díaz
authors.forename: Dunalia N
authors.initials: DN
authors.lastname: Llatas-Cancino
authors.forename: Marcos J
authors.initials: MJ
authors.lastname: Campos-Sánchez
authors.forename: Franklin R
authors.initials: FR
authors.lastname: Aguilar-Gamboa
authors.forename: Katya M
authors.initials: KM
authors.lastname: Mera-Villasis
authors.forename: Mayra Y
authors.initials: MY
authors.lastname: Valderrama-Ayén
mesh_terms: D000328:Adult; D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood*; D003430:Cross-Sectional Studies; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005334:Fever / Q000453:epidemiology* / Q000382:microbiology; D006801:Humans; D007919:Leptospira / Q000276:immunology*; D007922:Leptospirosis / Q000175:diagnosis / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D010568:Peru / Q000453:epidemiology; D012307:Risk Factors; D012959:Socioeconomic Factors; D055815:Young Adult
chemical_list: D000907:Antibodies, Bacterial