Yes, this antibiotic might prevent Lyme Disease if taken soon after tick bite - VERIFYThis.com

Under certain circumstances and in areas endemic for Lyme, a single dose of doxycycline can reduce a person's risk of developing the illness.

GREENSBORO, N.C. The thermometer heats up, the grass grows taller, and the U.S. crawls straight into dreaded tick season.  Anyone hoping to spend time outside this summer needs to remember the dread… [+3430 chars]

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