In a deer-tick mouse model, Powassan virus passed to naive mice after as little as 15 minutes of tick attachment. There appears to be no grace period for Powassan the way there is for Lyme - daily tick checks are not enough on their own in endemic areas.
Reported United States Powassan virus cases rose from a handful per year through the 1990s to roughly 30 to 50 per year by the early…
Ixodes marxi feeds primarily on tree squirrels and rarely bites humans, but it cycles Powassan virus lineage 1 through small mammals along…
Roughly 10 to 15 percent of patients hospitalized with Powassan virus encephalitis die, and around half of survivors have lasting…
Ixodes cookei is the textbook vector of Powassan virus lineage 1 in eastern North America, but it almost never bites humans. Its host…
CDC and IDSA guidance hold that Borrelia burgdorferi typically requires 36 to 48 hours of tick attachment to transmit. Removing a…
Powassan virus is named for the town of Powassan, Ontario, where in September 1958 virologists D.M. McLean and W.L. Donohue isolated it…