• Hello. I'm Jason Tetro.

    Microbiologist, Columnist and Author

  • "The Germ Files" is on sale now!

    Learn more and order in the Books section.

  • Take a look at some of my work.

    Education, Enrichment, Engagement, and Entertainment all in one.


I will be on the road talking about The Germ Files in libraries and bookstores around Ontario!
To see a list of appearances, click the calendar below!

In the meantime, here's a promo for the book...


Read these wonderful pieces on the book and also about me.

A profile of me in The Toronto Star
by their excellent columnist, Joe Hall.

A piece by me in The Globe and Mail
on why we all need to love microbes.

A nice look at The Germ Files in The Globe and Mail by Wency Leung.

I've also been fortunate to appear on television over the last few weeks
to support the book and share the germy word.
You can find the videos by clicking on the TV icon below.

My Books.

I have been honoured to write two books with Doubleday Canada, part of the Penguin Random House family. To learn more about each offering, click on the photo.

space filler here

and more

My Writing.

For nearly a decade, I've been working to increase public awareness of microbes and health. Most of my efforts come in the form of columns and blogs. Here you can find the most popular sources.

Confessions of a Mercurial Microbiologist

This site is devoted to my personal thoughts on our relationship with microbes and takes a different, if not experimental view on public awareness.

The Huffington Post

Each week, learn about the latest research in microbiology and how the information impacts each of our lives. In Huffington Post fashion, it is both interesting as well as informative.

Popular Science

What does the present knowledge tell us about our future? Check in each week to find out how recent research may one day change our lives.

Globe And Mail

Every relationship could use a little help. This column offers advice on how we can improve our lifelong bond with germs and offers ways to keep you and your loved ones healthy while respecting microbes and the environment.


I am a regular with CBC Radio and also with SiriusXM's Ward and Al Show.

Academic Research

Despite no longer having a proper lab, I keep up my research in a variety of ways. To check out my work, you can always look me up on Google Scholar.