This rash often resembles a bull 's eye and can appear within a few days of infection . Lyme disease comes from a bacterium called Borrelia burgdorferi . It 's the most common illness spread by ticks in North America and Europe . The bacteria is transmitted to humans through bites of infected deer, but it can also be passed on via other animals such as dogs or cats.
Lyme disease comes from a bacterium called Borrelia burgdorferi . It 's the most common illness spread by ticks in North America and Europe . The bacteria is transmitted to humans through bites of infected deer, but it can also be passed on via other animals such as dogs or cats.