Its virilence works against it, a parasite that kills its host quickly, with high mortality rates, limits its opportunities for propergation, add to that its relatively narrow window of infection, and the fact that it is only infectious when symptoms are showing, helps put the brakes on transmission. That said it is still a very scary organism and needs to be dealt with carefully.
This second infection in Texas is worrying though, if indeed it has been communicated by the officer being exposed to the environment that the first patient inhabited, then that goes against all that has been said so far about likely methods of transmission, and does not bode well for the other folks who where living in that appartment.