I ran out of new stuff to read this week, so I went to the bookshelf and got out an old favorite, Cobra Event by Richard Preston. Preston is a journalist/author who writes about what his website calls Dark Biology. His first hit book was The Hot Zone.
Cobra Event tells about a weaponized virus, created by gene splicing technology, and it is every bit as believable today - maybe more so - as it was when first published in 1999. If you haven't read this book, you should. It is still available on Amazon in both print and electronic versions.
What makes it so powerful is that every thing Preston describes in the book either has or could take place. If that doesn't scare the bejeebers out of you, you're just not paying attention.