Justin Cronin is the author of a book called The Passage .

It is book one of a trilogy that is set in the near future in an apocalyptic and post apocalyptic world that is overrun by vampire-like beings who are infected with a highly contagious virus. What begins as a project to develop a new immunity boosting drug based on a virus carried by an unnamed species of bat in South America, eventually becomes the virus that transforms the world into the undead. The Novel begins in 2014 and covers the fall of humanity and the struggle of colonies of humanity that have to attempt to live in a world that is filled with super-human beings who are continuously on the hunt for fresh blood.

If you haven't read it, I would recommend it. It is dark, depressing, but GOOD.

Similarly, the film Stake Land (It's on Netflix, go check it out) has a very similar premise, with the addition of Religious Fundamentalist Cults that believe the Vampires are the Lord's Will and drop Vampire "bombs" into human colonies in order to "convert" the unbelievers.

I was thinking of adapting EotW Zombie Apocalypse to Vampire Apocalypse instead.

The Lite rules of EotW would easily accommodate the creatures and fundamentalist would add an additional threat that the players as well.

Any thoughts or recommendations from the community?

Interesting. Elements of "Under the Skin" could be used I would imagine.

Sounds much like The Strain, the first book in a trilogy by Guiermillo Del Toro and Chuck Hogan, and the tv series from last year.

I think it could work really well. Are the vampires intelligent in this particular series or more like super powerful blood sucking zombies?

With intelligent vampires you could find most people actually want to become immortal and your post apocalyptic setting may be more like Day Breakers where the majority of the world has become vampires and they are trying to survive with dwindling supplies of human blood, perhaps setting up human farms to meet demand.

In the Passage, the Vampires are relatively mindless and animalistic, much like a zombie with the standard Vampire traits (nocturnal, super strength, drink blood, etc.) ... except for the 12 original test subjects for the drug and whom are the original hosts of the virus. They still possess human intelligence as well as a telepathic connection to their respective broods.