Erythema Migrans in Elderly

Clinical Course, Serologic Response and Long-term Outcome in Elderly Patients With Early Lyme Borreliosis

The investigators will focus on elderly patients with early Lyme borreliosis with the aim of assessing clinical course, serological response and treatment outcome of the disease as compared to younger adults. Furthermore, the investigators will compare the prevalence of nonspecific symptoms among patients and among age-matched controls without a history of Lyme borreliosis.

Inclusion Criteria:

• erythema migrans

Exclusion Criteria:

• pregnancy or lactation
• immunocompromised
• taking antibiotic with antiborrelial activity within 10 days
• received <10 days of antibiotic therapy for erythema migrans
• had an intercurrent episode of Lyme borreliosis during follow-up