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41 forestry workers, who had a high occupational risk of tick-bites, were screened for antibodies to Borrelia burgdorferi by ELISA and western blotting techniques, and questioned about possible symptoms of
Lyme disease. Antibodies were detected in 10 of the 40 men who had been bitten by ticks. Definite symptoms of
Lyme disease, in the form of erythema migrans, were reported by only 2 workers and none had a history of neurological illness.