This volume is causing the series to risk becoming cluttered, from a plot standpoint. Coming into this volume, the plot had the main driving conflict of "How do these characters, which are almost all infected with a disease that could kill them, survive in this post-apocalyptic world with massive thorny plants that have consumed everything, and also freaking dinosaurs?"
There was also the question of "How did we go from the world that these characters were in when they went into cryo, into the world with the aforementioned plants and dinosaurs?"
This volume, unfortunately, does nothing to answer these questions, and instead Iwahara decides to add a third plot thread to the mix, related to some sort of conspiracy theory about the virus - which at present does nothing to explain any of the earlier questions.
I'm going to keep reading this series, but I do hope that Iwahara learned something from the X-Files and Lost, that too many questions without a hint that there are answers coming doesn't keep your audience hooked - it burns them out.