The Germ Code has been shortlisted for the Canadian Science Writers' Association Book Award
for outstanding general audience book published in 2013.

The Germ Code

How to Stop Worrying and Love the Microbes
The Germ Code

The Germ Code

Since the dawn of the human race, germs have been making us sick. Whether the ailment is a cold, the flu, diabetes, obesity or certain cancers, the likely cause is germs. Our ancient enemies have four families - bacteria, viruses, fungi, and protozoa - and many names: Ebola, E. coli, Salmonella, norovirus, gonorrhea. . . Human beings are engaged in a "war on germs," in which we develop ever-more sophisticated weapons and defensive strategies. But it is a war we can never win. Our best plan for staying as healthy is to choose our battles carefully, and try to co-exist with germs as best we can. 


Media Appearances


Since 2007, millions of people have seen, heard and read of the adventures of The Germ Guy and his quest to better our overall understanding and appreciation of germs in our lives.

Popular Science

Under The Microscope

Under The Microscope

Under The Microscope is first and foremost, a blog about germs and immunology. Each weekly article will help to better understand the role of germs in our society. The topics will feature articles from the literature and place the spotlight on people who also wish to improve our connection with microbes. Health plays a primary role but microbial involvement in agriculture, economic sustainability, technology, and even the economy will be discussed.

Huffington Post Canada

Huffington Post Canada

Part of the Huffington Post Canada Living Section, this column highlights various topics and stories that reveal how germs play a role in our daily lives. From pathogens to probiotics, each weekly article reveals yet another fascinating way germs co-exist with us and why we need to give them the respect, appreciation and even love they deserve.

The Germ Guy Blog

Confessions of a Mercurial Microbiologist

This is Jason's personal blog where he shares his views and insights into topics that don't fit with either Popular Science or Huffington Post. The blog will also be a hub for Jason's research and other work with clients to share more academic information with the public.

National Speakers Bureau

Public Appearances

As a thought leader, Jason has delivered dozens of public lectures over his 25 year career including keynotes and panels. He is a dynamic and entertaining speaker with training in television and social marketing. No matter what the topic, Jason engages the audience and with a few laughs, leaves them with information and ideas that will last.

The Microbiologist

Academic Work

Jason has been working in laboratories since 1987 and has worked with some of the most important microbes in human health. He has also gained extensive experience in immunology and the continual dynamics of the immune system with microbes. He left the lab in 2013 although he continues to have an active presence in the academic community.

A Better Relationship With Germs

"Over the last six years, I have been striving to increase the knowledge of germs in the public and how we can all improve our bond with them."

Official Biography

Jason Tetro has spent the last 25 years learning about the effect germs have on our lives, most lately as a microbiologist at the University of Ottawa. He is now a consultant to international companies and non-profit organizations working to improve health. He has broadcast and written for a wide range of media including CTV Ottawa, the CBC, Toronto Star, Scientific American, The Huffington Post Canada, Popular Science and his “Germ Guy” blog. He also campaigns for a healthy attitude to germs through public speaking and social media. His hashtag #handhygiene was so successful it has been adopted by the World Health Organization. He lives in Toronto.

Personal Message

I wanted to first thank you for stopping by and taking a look at my site.

As a researcher, I have worked to ensure that information shared to the academic community was not only accurate but also relevant. It resulted in the publicatoin of papers, chapters and several presentations at conferences and by invitation.

Since 2007, when I was first given the opportunity to share my knowledge with the public, I have learned a great deal about the differences between the academic community and the world outside the lab. With each media appearance, I found myself fascinated at the interest in germs. Even more amazing was that the discussions were not about how to kill germs or stay germ free, but how to have a better appreciation for them. Despite what I had believed in academia, people were out to find a balance and develop a mutual co-existence on Earth.

Over the years, I have shared a compilation of scientific articles, human stories and advice from experts. From television to radio to the written word, I have been honoured to also receive feedback - mostly positive - on how my work has helped and/or changed people's lives. It is a rather humbling feeling and I am always grateful for every comment. With the release of The Germ Code and other milestones to come, I am sure that there will be even greater engagement.

As a final word, I would like to say that I am not only looking forward to what is to come but also to what I will learn...from you. I already have heard some amazing stories, met fascinating people, and read incredible passages from Emails and comments. I want to keep the dialogue going such that we can all grow together in our understanding of germs as well as humanity. After all, we are interminably linked; we should know how to make that connection positive.