Which insect is known for transmitting Lyme disease?

The deer tick, also known as the black-legged tick, is the insect primarily associated with the transmission of Lyme disease. This tick species becomes infected with the Borrelia burgdorferi bacteria when it feeds on the blood of infected animals, particularly rodents and deer. When an infected deer tick bites a human, it can transfer this bacteria, leading to Lyme disease, which is characterized by symptoms such as rash, fever, fatigue, and in some cases, more severe complications if left untreated.

Other insects listed, such as the house fly, American cockroach, and flea, do not play a significant role in the transmission of Lyme disease. While fleas can transmit various diseases, they are not vectors for Lyme disease. The house fly and American cockroach are generally not associated with disease transmission in the same way that ticks are, especially when it comes to Lyme disease. Therefore, understanding the specific role of the deer tick in the lifecycle of Lyme disease is crucial for preventing and managing this illness.