Terre Haute Tribune-Star A TV commercial for a vaccine is aimed at folks 50 and older who naively believe their healthy lifestyle shields them from the shingles virus. The narrator repeatedly reminds them, “Shingles doesn’t care.” Bike riding, trail walking and good citizenship cannot stop the varicella virus from emerging. That phrase, with a slight twist, could be used to describe the efforts of Indiana teachers to get the Republican-ruled leg…