This is one of the worst written shows I have ever seen in my life. I tried to like it. I tried getting past the first couple of episodes and made it to the last episode (have not watched and have no plans to).
This is terrible. It goes from epidemic that only the government is aware of to before the public is even completely aware of, there is already a network of vampires that just seem to.know where to meet up. Some people (like patient zero) seem to take weeks to develop symptoms and other seem to become ravenous vampires hours after infection. The idea that the police would give a guy who they believe just murdered his wife a quick furlough is simply ridiculous.
The concept is great, but the writing is simply some of the worst I have ever seen. This is beyond low budget. This is big budget and it seems their writers are still in middle school and have no clue how to develop the story.