Fast-paced, suspenseful and riveting!  This film entertains and  gives the scare factor spot-on.  The prosthetics and make-up of zombies were commendable and the actors did fairly well but Javier Rios was a stand-out, giving that antagonist-like support to the lead actor.  Thank goodness too, there was no lengthy dialogues.  And while the cure for the virus may seem unbelievable for me this film sure deserves a 4 star rating!