From the point of view of a vampire, the zombie holocaust would look like a human version of a global mad cow disease outbreak or, perhaps, something along the lines of current climate change thinking: it's a threat, but the majority of us don't really feel threatened yet, and there are too many short term incentives for too many of us to avoid rallying around such an abstract cause.
This is the premise of "The Extinction Parade," a free online story by Max Brooks, author of World War Z.
That's right, free as in "no money." Yeah, I know! Right?!?!