Airplanes are replete with a parade of sniffling-sneezing-aching-hacking passengers, and everything they touch. And those poor flight attendants must constantly interact with all of it, and even use the same lavatories as everyone else.

In his book ‘The Germ Freak’s Guide to Outwitting Colds and Flu’, Charles Gerba, Ph.D. tested commercial-jet bathrooms and discovered widespread ecol-i on surfaces from faucets to doorknobs.

Perhaps that’s the basis for the Journal of Environmental Health Research’s claim that we’re 100 times as likely to get sick while flying than on the ground.