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Author Topic: Can everyday clothes stop germs?  (Read 3645 times)

Offline DoctorBeaver

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Can everyday clothes stop germs?
« on: 19/09/2008 14:47:33 »
Sandra has got a rather nasty cold at the moment. Instinctively, and being my normal silly self, I pulled my T-shirt up over my mouth & nose when she came close to me. Then I had a thought (I did; and it was rather painful).

Surely germs are small enough to pass between the fibres of my cotton T-shirt. Or do the germs hitch a ride on moisture particles which my T-shirt probably would stop?


 

Offline RD

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Can everyday clothes stop germs?
« Reply #1 on: 19/09/2008 15:57:49 »
Quote
"It all started with an enquiry from a nurse," Dr Karl Kruszelnicki told listeners to his science phone-in show on the Triple J radio station in Brisbane. "She wanted to know whether she was contaminating the operating theatre she worked in by quietly farting in the sterile environment during operations, and I realised that I didn't know. But I was determined to find out."

Dr Kruszelnicki then described the method by which he had established whether human flatus was germ-laden, or merely malodorous. "I contacted Luke Tennent, a microbiologist in Canberra, and together we devised an experiment. He asked a colleague to break wind directly onto two Petri dishes from a distance of five centimetres, first fully clothed, then with his trousers down. Then he observed what happened. Overnight, the second Petri dish sprouted visible lumps of two types of bacteria that are usually only found in the gut and on the skin. But the flatus which had passed through clothing caused no bacteria to sprout, which suggests that clothing acts as a filter.

"Our deduction is that the enteric zone in the second Petri dish was caused by the flatus itself, and the splatter ring around that was caused by the sheer velocity of the fart, which blew skin bacteria from the cheeks and blasted it onto the dish. It seems, therefore, that flatus can cause infection if the emitter is naked, but not if he or she is clothed. But the results of the experiment should not be considered alarming, because neither type of bacterium is harmful. In fact, they're similar to the 'friendly' bacteria found in yoghurt.

"Our final conclusion? Don't fart naked near food. Alright, it's not rocket science. But then again, maybe it is?"

Canberra Times, 17/7/01.
 

Offline DoctorBeaver

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Can everyday clothes stop germs?
« Reply #2 on: 19/09/2008 17:57:22 »
 

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Can everyday clothes stop germs?
« Reply #2 on: 19/09/2008 17:57:22 »

 

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