 A genetically engineered virus gets loose from its scientist-creators and systematically lowers everybody's IQs. This book was written by Arthur Herzog, who also wrote Orca and The Swarm, which should give you some idea about the disaster movie quality of its writing. I read it in the late 70s when I was in junior high, and even at that age I found it scientifically uninteresting, although entertaining. It was my first encounter with the plague novel, which taught me that every plague novel is going to end exactly the same way. On the next to last page, the hero will have a genius idea that will instantly cure himself, then you turn the page and the whole world is cured. The end. If you want to see some really entertaining negative descriptions of this book, look it up on Goodreads. You can support 30 Second Sci-Fi and my other projects by becoming a patron. There's a link in the description below. And visit the 30 Second Sci-Fi Tumblr, that's my headquarters. In addition to my videos, I publish links and updates there every day.