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PART 8: Infectious Diseases
SECTION 9   Spirochetal Diseases

173 Lyme Borreliosis
Allen C. Steere

Figure 173-1  A classic erythema migrans lesion (9 cm in diameter) is shown near the right axilla. The lesion has partial central clearing, a bright red outer border, and a target center. (Courtesy of Vijay K. Sikand, MD; with permission.)
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Figure 173-2  Algorithm for the treatment of the various acute or chronic manifestations of Lyme borreliosis. AV, atrioventricular. *For Lyme arthritis, IV ceftriaxone (2 g given once a day for 14–28 days) is also effective and is necessary for a small percentage of patients; however, compared with oral treatment, this regimen...
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