are we hermits on to something?

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Bacteria are everywhere and in much larger amounts than you may realize. A new study looks at how much a lone human presence affects the level of indoor biological aerosols and the results may be shocking to some.

A person’s mere presence in a room can add 37 million bacteria to the air every hour — material largely left behind by previous occupants and stirred up from the floor — according to new research by Yale University engineers.

“We live in this microbial soup, and a big ingredient is our own microorganisms,” said Jordan Peccia, associate professor of environmental engineering at Yale and the principal investigator of a study recently published online in the journal Indoor Air. “Mostly people are re-suspending what’s been deposited before. The floor dust turns out to be the major source of the bacteria that we breathe.”-item continues with link