My somewhat nitpicky brain kept getting bogged down by details
The series is somewhat of an A-Team meets Resident Evil with a side order of Doom, only with sex. The virus was created to make super soldiers rather than an attempt to cure a kid. Doesn't really matter as it backfired.
Books 2 and 3 take place over about a week. At the end of book 2, the villain has taken his latest iteration of the serum, and unwittingly unleashed a virus. The trouble with this is that the h from book 2 gets an email from h from *this book* saying she has 200 doses of a vaccine. Since he'd just come up with the idea of a virus as a vector like, a day or two before...how would they have *any* vaccine, let alone 200 doses of it???
In the previous book, right as the villain lost his mind, he killed his financial backer. Nobody saw this - or saw the body - yet they knew somehow that he was dead??
The h in *this* book ran up to his office, saw nobody, and grabbed the case of vaccines that was just..sitting there? Did the guy's body magically turn into a large insulated suitcase? He wasn't bitten so he couldn't have been infected.
Now... about *this* particular book. It's good really. As a standalone, I'd have enjoyed it immensely. It's just that somewhere along the line, details got forgotten and since I'd just read the two previous books, that's hard to ignore.
The H, twitterpated at a picture of the h, raced as quickly as he could to fetch her - and the vaccines. He managed to arrive at her apartment door where she's been variously observing how the virus affected the infected, and having her own private pity party. Of course, the first thing he does after she yanks him into her apartment, is bone her. That taken care of, they - together with the rest of the gang via his hi-tek toys - plan on an escape. Naturally, the escape plan is blown to hell via a ruptured gas main so plan b. They get out, find their way to an isolated B&B...and here I twitch a bit as they decide to use the owners' quarters instead of a guest room. I mean really? You just slept in used bedding (and did other things) when there were guest rooms right up the stairs?
Then they take the owner's offroad vehicle to get to the home base. Goes great - right up until someone at the home base fails to deactivate the explosives in the approach road and manages to cause them to wreck. Oh, and a group of recently infected attack, and the H (who, in spite of having a case of 200 vaccines, never seems to have thought to maybe use one on himself and the h??) gets bitten. The h's woo-woo power is that she's a healer, so she cures him.
As an aside, it seems like every book had the h having a NDE, and the H using their speshul connection to bring her back to life. I have a long standing dislike of things like that, and while the H/h are in fact, couples when it happens in this series, it still irritates me.