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Lyme
disease - Spread by black-legged deer ticks, Lyme
disease is caused by a spiral-shaped bacterium called Borrelia
burgdorferi. Once it is passed into the human bloodstream by a tick, the
bacterium quickly multiplies. It causes flu-like symptoms that can include
headache, joint pain and nausea. A bulls-eye rash also often forms around a
tick bite area. The Northeastern and Mid-Atlantic states account for most
reported cases of Lyme disease, according to the federal Centers for Disease
Control and Prevention, in Atlanta, Georgia. Return to story
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| Spores - Strong capsules or pods
in which fungi can survive outside a natural host or withstand harsh
environmental conditions until they become more favorable for growth. Return to story
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Arachnids
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