Your showerhead and toothbrush are teeming with viruses. But don’t panic – these microbes could save lives

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more.

The warm, damp environments of your showerhead and toothbrush are the perfect breeding ground for microbes, and a new study has identified hundreds of viruses that live there, showing the vast biodiversity to be found in the average home. 

These viruses, however, are not the kind that will give you the common cold or flu (or worse). Called bacteriophages...