Deadly tick-borne Powassan virus surfaces in New York state, kills 30% of those infected
http://www.nationalpost.com/m/wp/life/health/blog.html?b=life.nationalpost.com%2F2013%2F08%2F01%2Fdeadly-tick-borne-powassan-virus-surfaces-in-new-york-state-kills-30-of-those-infected
Unlike Lyme disease, there’s no treatment for Powassan virus; doctors can address symptoms only. The virus can cause central nervous system malfunction, meningitis and encephalitis — brain swelling.