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  • Title: Seroepidemiological survey for Borrelia burgdorferi (Lyme disease) in dogs from northwestern of Spain.
    Author: Delgado S, Cármenes P.
    Journal: Eur J Epidemiol; 1995 Jun; 11(3):321-4. PubMed ID: 7493665.
    Abstract:
    A random epidemiological study was undertaken to estimate the prevalence of canine borreliosis (Lyme disease) in Castilla y León, the largest region in Spain. The presence of antibodies was determined by indirect immunofluorescence assay (IFA), using the Borrelia burgdorferi B31 strain as antigen. Sera from 308 dogs from 7 provinces in the region were tested. Of all the animals sampled, 37 (21%) were seropositive (titres of 1/64 or above). Almost all the provinces had seroprevalence of 20% or below, except for an important focus of borreliosis in the Zamora province (42.8%). Potential risk factors (age, sex, use, habitat, season, and presence of ticks on the animals) relating to the presence of antibodies were evaluated. Those dogs which had at some time had ticks were more often seropositive, at 24.2%, than those which had never had them, at only 6.2% (p < 10-n). No significant differences were discovered for the remaining factors studied. This work indicates that dogs in Castilla y León, even if in most cases they do not develop the disease, are exposed to the Lyme disease agent.
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