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Updated: Aug 18, 2026

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR
Published on: February 4, 2018
Comments on the course and classification of Lyme borreliosis
1Department of Dermatology, Södersjukhuset, Karolinska Institute, Stockholm, Sweden.
Abstract:
On the basis of answers by clinicians to a questionnaire concerning the classification and staging of Lyme borreliosis, the following classification is proposed: EARLY LYME BORRELIOSIS Localized infection: Erythema migrans and borrelial lymphocytoma without signs or symptoms of disseminated infection. (Regional lymphadenopathy and/or minor constitutional symptoms may be present). Early disseminated infection: Multiple erythema migrans-like skin lesions. Early manifestations of neuroborreliosis, arthritis, carditis or other organ involvement. LATE LYME BORRELIOSIS Chronic infection: Acrodermatitis chronica atrophicans. Neurologic, rheumatic or other organ manifestations--persistent or remitting for at least 12 (or 6) months.
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