MicrobeWorld App


Microbes After Hours

Click for "Microbes After Hours" videos

Agar Art Contest 2016


Featured Image

Featured Video


Join MicrobeWorld


ASM House 200X200

Subscribe via Email


Human-associated Species Dominate Restroom Bacterial Communities

The results of a recent study characterizing microbial communities in public restrooms may be enough to change the ways of those who don't already wash their hands after using the toilet. The study found that restrooms are dominated by human-associated bacteria--particularly those from the skin, gut, and urinary tract. Although this is not particularly surprising, the "biogeography" of these species--or which surfaces they were most commonly found inhabiting--was a bit unexpected. While there were three distinct clusters of species (bacteria on or near toilets, those on the floor, and those on surfaces mostly touched by hands), there were also several groups of bacteria that were present on all surfaces. This includes gut and urine bacteria, which were found not only on the seats and handles of toilets, but also on sink faucet handles, soap dispensers, and even on the handles of doors leading out of the restroom--in other words, the areas touched after hand-washing has already been completed.

Comments (1)

  1. No wonder - the majority of guys do not wash their hands (properly) after using the toilet (ASM News, October 2002, p.477) and the comments by F.D.A. Rosenberg (ASM News, January 2003, p. 1), V. G. Wilson (ASM News, April, 2003, p. 162), and F. A. Rosenberg (ASM News, July 2003, p. 319). And then pathogens are also found in soap dispensers (Microbe Volume 2, Number 8, 2007 p. 375)

Collections (0)


American Society for Microbiology
2012 1752 N Street, N.W. • Washington, DC 20036-2904 • (202) 737-3600
American Society For Microbiology © 2014   |   Privacy Policy   |   Terms of Use