Every page is fascinating, every detail on this amazing journey through history affects our daily lives: the story of how humans discovered microbes and germs and created the world we know today. Never has science been so compelling, exciting and accessible as it is in the hands of Thomas Levenson. Brilliant!

Simon Sebag Montefiore, author of The World: A Family History of Humanity

A thought-provoking, engrossing account of one of the most momentous transformations in our understanding of the world and our place in it. So Very Small brings the history of science to life with vivid details and captivating anecdotes.

Dr Jonathan Kennedy, author of Pathogenesis

So Very Small is the wonderfully intimate and intertwined story of how humans discovered microbes and learned to tame them. Levenson is a master storyteller, and his latest book reads like an epic novel, spanning centuries, continents and microbial calamities. It offers a compelling story of how microbes have influenced society, seamlessly intertwined with fascinating historical events, while vividly bringing the characters and scientific discoveries to life.

Alanna Collen, author of 10% Human

Fascinating... Thomas Levenson expertly combines storytelling and big questions, most notably: Why not? Why wasn't the germ theory of disease formulated 200 years earlier? Why, in general, are huge scientific discoveries delayed until they happen?

David Quammen, author of Spillover

In So Very Small, author Tom Levenson brings to brilliant life the social history of medical detective work, notably the long quest to understand and to combat infectious disease. In doing so he illuminates the fascinating world of pathogenic microbes, the often unexpected ways we've achieved protection, and the often self-destructive ways we've undermined – and continue to undermine – our own public health successes. In a world where the next pandemic waits ahead, this is essential reading.

Deborah Blum, author of The Poison Squad: One Chemist's Single-Minded Quest for Food Safety at the Turn of the Twentieth Century

In So Very Small, Levenson transports us to the eighteenth century to begin the long and winding journey to the discovery and prevention of infectious disease, interweaving history, science and philosophy. Join him to learn about the greatest of human endeavours.

Professor John S. Tregoning, author of Infectious