Philip M. Tierno, Jr., PhD

Philip M. Tierno, Jr., PhD, clinical professor of microbiology and pathology at New York University Langone Medical Center. He is author of The Secret Life of Germs: Observations and Lessons from a Microbe Hunter.


Stay Healthy When You Fly

Common colds and flu aren't the only dangers—potentially deadly germs lurk on seats, trays, armrests.


Why Are Probiotics in My Hand Sanitizer?

A hand sanitizer is a convenient way to rid yourself of germs when hand washing isn’t an option. But should it contain probiotics? Read on…


Germs on Your Money

Recent research identified thousands of types of bacteria on paper money, including germs that cause food poisoning, staph infection and pneumonia.

Personal Care

The Germiest Spots in Public Places

You’re not paranoid—germs really are out to get you. But not from the much publicized diseases...


Are Your Shoes Walking Germs Through Your Home?

Is your home a shoe-free zone? More to the point, should it be? I’ve been contemplating this issue, in part…


Germ-Fighting Tactics Most People Overlook

The best stay-well strategies for cold and flu season You eat right, get enough sleep and wash your hands several…


Los Angeles Sees Superbug Invasion

The rise of superbugs sounds like something out of a sci-fi movie, but as we know all too well, the…