How long does it take before Lyme disease can be transmitted from a tick to a person?

How long does it take before Lyme disease can be transmitted from a tick to a person?

• A. 72 hours
• B. 24 hours
• C. 7 days
• D. 14 days

Answer: (A)

Lyme disease transmission hinges on how long the tick has been feeding. The Borrelia burgdorferi bacteria reside in the tick and take time to migrate from the gut to the salivary glands and be transmitted during feeding. Because this process needs sustained attachment, transmission is unlikely in the first day and becomes more probable as the tick remains attached for a longer period. Among the options, the timeframe that best reflects a prolonged attachment before transmission is around 72 hours, whereas 24 hours is typically too short and 7 or 14 days imply far longer waits than necessary. This is why a three-day duration is the most plausible threshold presented. Prompt tick removal within 24 hours markedly reduces, but does not guarantee, transmission risk.

Lyme disease transmission hinges on how long the tick has been feeding. The Borrelia burgdorferi bacteria reside in the tick and take time to migrate from the gut to the salivary glands and be transmitted during feeding. Because this process needs sustained attachment, transmission is unlikely in the first day and becomes more probable as the tick remains attached for a longer period. Among the options, the timeframe that best reflects a prolonged attachment before transmission is around 72 hours, whereas 24 hours is typically too short and 7 or 14 days imply far longer waits than necessary. This is why a three-day duration is the most plausible threshold presented. Prompt tick removal within 24 hours markedly reduces, but does not guarantee, transmission risk.