Tick-borne Powassan virus on the rise May 1, 2015geeky science & health stuff, Home, Northanaplasmosis, ArboNET, babesiosis, Center for Health Security, Centers for Disease Control and Prevention, Chuck Lubelczyk, deer ticks, Dr. Amesh Adalja, epidemiology, Griffin Dill, guinea hens, I. Scapularis, Lyme, Lyn Snow, Maine, Maine CDC, Maine Health and Environmental Testing Laboratory, Maine Medical Research Center Institute, Maine Tick ID program, Marc Fischer, Marilyn Snow, permethrin, Powassan virus, Sara Robinson, TBE vaccine, Tick-borne encephalitis, University of Pittsburgh Medical Center By Ned White Maine has had no new Powassan cases since Lyn Snow’s death in 2013. But several sources say the virus is on the increase: as many as 4% of deer ticks may be carrying this extremely dangerous pathogen.