Is there West Nile virus at the New York state fair? That's a natural suspicion that arises out of some unusual conduct Wednesday by the Onondaga County Health Department. Another suspicion that arises is that the department may have changed its practices -- and possibly endangered public health -- in order to avoid hurting attendance at the fair or raising embarrassing questions while the governor was in town. Here's the background. Each summer, the Onondaga County Health Department tests mosquitoes for the presence of the West Nile virus and eastern equine encephalitis. It does this by placing traps in wet...