So far these are "character sketches", self contained stories giving a separate prelude for each main character. While some of the other stories include spoilers for the previous sketches, this one is entirely 100% independent. It doesn't mention any other character form a prior sketch, and aside from mentioning the appropriate military body it doesn't even mention any specific group that was previously mentioned. You don't gain any benefit from the prior stories to listen to this one even.

Gore level is as yet uncertain. This was sort of a bit like a way creepier version of Ancestor in a single episode though. Each sketch has been different in its own way, but this one is just completely out there. All the rest at least were based around military surroundings, but this was an AWOL woman who seems to have a bit of a dark past going for a break of sorts.

I'll certainly have a look at that.

Sigler doesn't put his stuff up on podiobooks until it's finished, he seems to use it as a sort of archive. All in progress stuff is posted purely on his scottsigler.com site along with the news updates. Last I heard they were also working on a movie version of infected too.

All this said I personally found Nocturnal far more interesting than Infected, I kept feeling like Infected was just the intro and it never really took off in the same way the other Sigler stories do.