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Human: Big Bag of Germs


Human: Big Bag of Germs

(ePharmaNews) - Briefly, and despite what might be a problem for those who are obsessed with hygiene, a new study finds that a person himself is a big bag of germs, and no matter how much he cares about cleaning things around him, once he is in a room for an hour, he adds about 37 million bacteria to the air.

"We live in this microbial soup, and a big ingredient is our own microorganisms," One of the researchers said, and it seems that our bodies  are the main supplier to the component of that soup , according to the study published in Indoor Air  journal.

To understand the impact a person can have on indoor air quality, the researchers at UC Berkeley and Yale University monitored a university classroom for eight days. For four of those days, the room was vacant, in the remaining days, there was periodic occupancy.
While other studies have examined the bacterial contagion of objects or spaces in a room, this is the first to quantify the bacterial sloughing of the human presence. This is the "first time anyone has quantified emissions of bacteria and fungi associated with human occupancy using modern DNA-based analysis methods," said one of the researchers. 

 The researchers found that the presence of a person correlated with significant spikes in fungi and bacteria circulating in the air. In particular, it was the large-fungal particles and medium-sized bacteria that were most prevalent.
They found that nearly one-fifth of all bacteria and fungi measured in the room came from human sources, as opposed to plants or other sources. And the most predominant bacteria were a common human skin critter. The researchers noted that carpeted rooms were the most infested.

 These germs spread in the air, and new occupants picked them up again, and it was like a cycle where people share the transfer of bacteria,
 “Mostly, people are re-suspending what's been deposited before;" one of the researchers said “The floor dust turns out to be the major source of the bacteria that we breathe."
In other words, "Whenever you share occupied indoor spaces with others, you are exposed to bacteria and fungi associated with other current and probably recent occupants, we have clues about factors that might influence levels; for example, higher occupant density implies greater exposure.”

So far, it seems that all the study results are bleak and scary, but in fact, this study examined the normal phase of daily life, and did not do more than monitoring small world around us which we do not even see. However the study did not test the pathogenesis of these germs and the significance of the results is just speculated. Scientists are waiting the results of further prospective studies that can link between the bacteria people carry normally and diseases.
"However, we don't yet know whether there is any health significance associated with routine bacteria and fungi exposure indoors."One of the scientists said. Anyway, there are other more pessimistic opinions like:"All those infectious diseases we get, we get indoors" Said another researchers.


اضغط هنا للقراءة باللغة العربية

Prepared by: Basel AlJunaidy
Translated by: Marcell Shehwaro


Source :

ePharmaNews






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