A heatwave is caused by a system of higher atmospheric pressure. In a high pressure system, air from upper levels of the atmosphere descends and rotates outward. As it comes down, it becomes compressed, which increases its temperature and dries it out.
Lyme disease: An inflammatory disease that is caused by the bacterium Borrelia burgdorferi, which is transmitted to humans by the deer tick. The first sign of Lyme disease is a red, circular, expanding rash, usually radiating from the tick bite, followed by flu-like symptoms and joint pains.
Lyme disease is a multisystem illness caused by infection with the spirochete Borrelia burgdorferi and the body's immune response to the infection. The disease is transmitted to humans via tick bites, from infected ticks of the genus Ixodes.Lyme disease is the most common vector-borne illness in the United States.yme disease, the most common vector-borne illness in the United States, is a multisystem illness caused by infection with the spirochete Borrelia burgdorferi (see the image below) and the body's immune response to the infection.