Sorry for not immediately starting the book but before it starts you need some info on the hate group.
The group is called "New Planet" they are a moderately small group but very well funded with lots of people in science jobs working in labs, which help in creating the virus, once they made the virus (by accident) they decided to send some of the pawns of the group to each and every country (more depending on the size of the country) who would inject the virus and spread it by going to the areas with the highest population in the country. While this would be going on the computer geeks would be going and taking control of all the nuclear weapons so that they couldn't just nuke the zombies (not actually zombies but easier to be called zombie).
The MC of the story isn't from Japan or USA or any other fancy big country but from wee little Northern Ireland cause why not I havent seen any stories about Northern Ireland.