With air filters and weekly wipe-downs and vacuuming, NASA goes to great lengths to keep the International Space Station clean so that astronauts stay healthy. But astronauts still often experience health problems like immune dysfunction, skin rashes and other inflammatory conditions. One reason may be because the ISS might be too clean, a new study suggests.
Microbes, tiny living organisms like bacteria and viruses, play an important role in human health. But samples of surfaces in the ISS reflect a striking lack of microbial diversity, Rodolfo Salido Benítez, a bioengineer at University of California, San Diego, and colleagues report February 27 in Cell.
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