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Seroprevalence of Lyme disease in Navarra, Spain.

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To establish the seroprevalence of infection by Borrelia burgdorferi in Navarre (Spain).


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.


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.


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.

Copyright © 2010 Elsevier España, S.L. All rights reserved.

Med Clin (Barc). 2011 Mar 26;136(8):336-9. doi: 10.1016/j.medcli.2010.06.008. Epub 2010 Sep 29. English Abstract; Research Support, Non-U.S. Gov’t

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