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Lyme disease in the province of Soria: clinico-epidemiologic study.

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Abstract

BACKGROUND:

To determine the prevalence of the Borrelia burgdorferi infection in the Soria Province, and the detection of the human
disease cases.

METHODS:

By an indirect immunofluorescence technique, we had studied total antibodies (IgG, IgM and IgA) against B. burgdorferi (B 31 strain) in the sera of 298 people (150 men y 148 women) of the Soria Province. The results were considered positive when the titers were same or upper to 1/256. All positive sera were tested for specific IgM antibodies by same method; IgM results were considered positive when the titers were upper to 1/16.

RESULTS:

13.1% of the people had positive results (39 sera): 14 for women (9.5%) and 25 for men (16.7%). We detected 14 sera with positive IgM. We demonstrated titers same or upper to 1/256 in all age group, with a major prevalence in the age group between 41 and 50 years (22.6%). In all areas of the Province we detected positive results and in many of this areas the positivity was upper to 30% of the studied sera. 12 persons with positive IgM or high titers of total antibodies presented signs or symptoms of
disease in relation with B. burgdorferi infection; 6 persons had alterations of the liver function do not explicable by other etiology.

CONCLUSIONS:

The B. burgdorferi infection present a high prevalence in this Province and a wide geographic distribution, with high endemic areas. We demonstrated patients with symptomatology compatible with
Lyme borreliosis, and we wish to emphasize the frequency of alterations of the liver function in this group of people.

Enferm Infecc Microbiol Clin. 1994 Feb;12(2):52-9. Case Reports; English Abstract

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