What Are the Symptoms of Lyme Disease in Humans?
What is the story behind What Are the Symptoms of Lyme Disease in Humans? Explore the insights in this feature article.
Occurs in approximately 70 to 80 percent of infected persons. Begins at the site of a tick bite after a delay of 3 to 30 days (average is about 7 days) Expands gradually over several days reaching up to 12 inches or more (30 cm) across.