There's very little I can say about The Vector that hasn't been said before.
It's action-packed, fast-paced, thrilling and occasionally stomach-turning. Definitely not for the squeamish; being a little iffy about viruses myself, there were several moments where I felt faintly sick. The story's so good, though, that I ploughed on.
The story follows three plot lines: Eva, who is searching for her mother in Prague; Carey, an office worker reluctantly involved in the politics behind vaccines for viruses; and the mysterious Healer who is hunting down the original hosts of the viruses, called the `vectors'.
Having these three different plot lines really helps the reader sink into this post-apocalyptic world and understand the situation from all perspectives. Eva is on the streets, at risk of being infected herself, and sees the gritty reality of death. Carey is involved in the office politics, giving a sense that these epidemics are much more calculated and sinister than expected. And the Healer sees everything from an outsider perspective, an objective executioner of sorts.
The setting is well-planned, and incredibly realistic. As for the writing style of the narrative, MCM is a professional author and it shows, even in the little details. I particularly like how he uses dialogue and lexical choices to subtly convey character accents.
If I had to complain about anything, I'd say the prologue is the weakest part of the story. The staccato sentences struck me as odd, as did the use of `it' to refer to the Healer.
Overall, an exciting and thrilling read. If you're an adrenaline-junkie with a fondness for sci-fi, this is the story for you.