Lyme disease is transmitted by the tick.

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Lyme disease is transmitted by the tick.

Tick bites spread Lyme disease. The causative Borrelia burgdorferi complex is carried by certain ticks and is transmitted to humans during a blood meal. A key point is that transmission generally requires the tick to be attached for a substantial period—often about a day or more—so the risk rises with longer attachment and decreases with prompt removal. In North America and Europe, the principal vectors are Ixodes species, such as the deer tick or black-legged tick. Mosquitoes, fleas, and mites are responsible for other infections, not Lyme disease. Understanding this helps with prevention: after outdoor activity in tick habitats, check for and remove ticks promptly, use protective clothing and repellents, and be aware of early signs like the characteristic expanding rash.

Tick bites spread Lyme disease. The causative Borrelia burgdorferi complex is carried by certain ticks and is transmitted to humans during a blood meal. A key point is that transmission generally requires the tick to be attached for a substantial period—often about a day or more—so the risk rises with longer attachment and decreases with prompt removal. In North America and Europe, the principal vectors are Ixodes species, such as the deer tick or black-legged tick. Mosquitoes, fleas, and mites are responsible for other infections, not Lyme disease. Understanding this helps with prevention: after outdoor activity in tick habitats, check for and remove ticks promptly, use protective clothing and repellents, and be aware of early signs like the characteristic expanding rash.

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