Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: This book is worth reading if you are interested in Biological warfare and germs

This book explains how germs become immune to different medicines. It gives many examples of diseases and many possibilities to what the future may have in store for us. Unfortunatly, everything in this book is true so all of the stories of diseases that killed thousands of people were not fiction. During the time of these diseases, the correct vaccines and antibiotics were unknown so many people and animals were killed because of them. Their are many countries working on developing biological weapons but only a few worry the united states because of their past relationship with the US. This book is definently worth reading if you are interested in this kind of stuff.