I agree, it has a place to spread from rather than person to person contact. If this was a case of lax maintenance allowing the stacks to grow the bug could that come to WDW? The cost cutting over the last few years might translate to a systemwide issue.
Really surprised this didn't get more play when it first broke then to have TDA close the stacks again on their own (not ordered by the Health Department) seems they have a bigger problem than was determined at first.