For one of the classes I took in college, one was named ‘Survival of the Fittest’. Being a science a based class, we were told carry out an experiment in which we compared interior contagion and external contagion. Meaning, things outside the building and their exposure to germs and bacteria, and those inside the building.
We took samples from different spots from the outside like bannisters, trash cans, door handles and from the inside we took samples from drinking fountains, door handles, chairs, bannisters e.t.c…
We had swabbed those spots with a Q-tip, one side for each zone. We then wiped that Q-tip in a cultured petri dish which was then left in a room set to 84*F.
My result, to my astonishment, was that the inside zone bred 5 times the amount of contagious bacteria than the outside. That too after how many times its cleaned…:yukh:
my cousin was a microbiologist and used to work in karachi…
her team collected samples of normal tap water that was being supplied to the normal households by KWSB from different areas all over karachi and then ran tests on them…
not a single sample was free of organic human waste content…and in fact most of them contained a percentage which was shockingly high!!!
We did a culture analysis similar. Prepared augar dishes and set them in places we assumed would contain many contagions and a few in places we assumed would very few. I was surprised to find that my petri dish collected the most not in a public restroom, but in the girls' dormatory lobby area! yuck The second highest percentage of contagions was collected in the actual classroom for which we attend lecture. Kind of makes you wonder who was in that desk or chair before you sat down;)
