"Hispanic" is just the identifier for the array.
The interesting part: the hispanic community in Indy is not terribly isolated or dense. There are Hispanic-heavy neighborhoods, but no Barrio...The hispanics live in all parts of town, more or less, so seeing the disease progress through that community seemingly without infecting the greater population is evidence that athropology - cultural factors - may have as much (or more) to do with the spread of the disease than simple proximity does.
That bit of information seems to run counter to the more common story that the disease is pervasive and persistant...if Denny's observation holds merit, we are most likely to be infected by those closest to us, not a random passerby.
My interest is, what motivated the interest? It's not always easy to tell in a written post. Is it straight up demographics or there were lines implied to read between.