Powassan (POW)

Powassan (POW) is caused by a flavivirus. There are two virus types. One virus type is transmitted by the deer tick/blacklegged tick (Ixodes scapularis): lineage 2 POW virus (“deer tick virus”).  The other virus type is transmitted by other Ixodes ticks – Ixodes marxi (squirrel tick), and Ixodes cookei (woodchuck tick–found E. of Rockies into New […]

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