Also known as Lyme borreliosis, is an infectious disease caused by bacteria which is spread by ticks. The most common sign of infection is an expanding area of redness on the skin, known as erythema migrans that begins at the site of a tick bite about a week after it has occurred. The rash is usually neither itchy nor painful.
This disease describes infections caused by a bacterium and while it carries a high mortality rate if untreated, is a vaccine-preventable disease. While best known as a cause of meningitis, widespread blood infection can result in sepsis, which is a more damaging and dangerous condition. It can be transmitted through saliva and general contact with an infected person.