Ixodes pacificus
Life Cycle
In order for a human to be infected by the bacterium, the tick carrying it must be attached for approximately 36 to 48 hours. Due to the smaller size of the nymphal stage ticks, approximately 2 mm, they are more likely to go unnoticed when attached to a human. This enables a nymph to potentially stay attached longer to the host it is feeding on. For this reason, the nymphal stage is primarily responsible for transmission of Borrelia burgdorferi.
Ixodes pacificus-11