Illustrative examples of culture-confirmed erythema migrans. A, A single erythema migrans lesion of 8.5 × 5.0 cm on the abdomen. The lesion is homogeneous in color, except for a prominent central punctum (presumed site of preceding tick bite). B, Patient with >40 erythema migrans lesions found. Note the prominent central clearing of the lesions present on the abdomen. 
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