Migrating ticks make Lyme disease diagnosis ‘tougher’

Lone star ticks, which originated in the southern United States, are on the move, potentially complicating the diagnosis of tickborne diseases in areas where they now overlap with ticks that cause Lyme disease, according to experts.The ticks are heading north and causing southern tick-associated rash illness (STARI), which produces a “bull’s-eye” rash indistinguishable from the