It's almost that time of year when you ever-so-slowly inch away from the person with the hacking cough and infectious sneeze.
Turns out it's pretty hard to avoid the germs of your co-workers, even the ones you don't know personally. Just one door contaminated with a virus spreads the germ to about half the surfaces and hands of about half the employees in the office within four hours, according to a study at the University of Arizona, in Tucson. Germs traveled through the office just as quickly when the researchers infected a single person with the artificial virus.