An unattached tick can crawl on a person for hours before biting. CDC's two-hour shower rule is based on field studies showing that bathing within roughly two hours of coming inside meaningfully reduces Lyme disease risk by washing off questing ticks before they attach.
CDC and IDSA guidance hold that Borrelia burgdorferi typically requires 36 to 48 hours of tick attachment to transmit. Removing a…
A 2001 NEJM trial by Robert Nadelman and colleagues showed that a single 200 mg oral dose of doxycycline within 72 hours of removing an…
An attached tick's level of engorgement is the most useful proxy for how long it has been feeding. A flat, unengorged tick is probably…
Within 5 to 30 minutes of biting, a hard tick begins secreting a glycine-rich saliva that hardens around its mouthparts into a cement…
A removed tick is not biologically dead the moment you take it out - it can survive in a sealed container for weeks. CDC recommends…
Soft ticks in the genus Ornithodoros can survive years between blood meals and live for a decade or more. A single infected tick can sit…