epidemiology and prevalence of seropositivity against borrelia burgdorferi antigen in la rioja, spain.the aim of this study was to acquire a better knowledge of the epidemiology of lyme disease. a seroepidemiologic study was made by evaluating the different levels of antibodies to borrelia burgdorferi in a five hundred serum representative sample of a population from the province of la rioja, spain. samples were randomly selected and stratified to take into account sex, age, rural or urban residence, and geographical area. all subjects included in the study were asked to fill out a questionnaire ...19921631381
presence of granulocytic ehrlichia in ticks and serological evidence of human infection in la rioja, order to estimate the risks of human granulocytic ehrlichiosis (hge) in an endemic area for lyme disease in the north of spain (la rioja), we collected and investigated by pcr specific to the e. phagocytophila group dna, a total of 6870 ixodes ricinus ticks. we also used an indirect immunofluorescence (ifi) test to study the presence of antibodies to the hge agent in 147 human serum samples including patients with lyme disease (ld), forestry workers, and persons with history of previous tick ...200111693514
[lyme disease in la rioja]. 19902090903
[lyme disease in la rioja]. 19912051825
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