What is Lyme disease and what causes it?
Borrelia Burgdorferi. Lyme disease is an infection caused by several strains of the bacteria Borrelia burgdorferi (Bb) . The bacteria is transmitted to humans through the bite of an infected tick.These ticks can also transmit other diseases and infect pets and livestock.The tick that transmits Lyme is so small you may not notice it.orrelia Burgdorferi. Lyme disease is an infection caused by several strains of the bacteria Borrelia burgdorferi (Bb) . The bacteria is transmitted to humans through the bite of an infected tick.