Study: What kinds of floor materials allow bacteria, fungus to survive?

Floor materials, such as vinyl composition tile and porcelain tile, allow Staphylococcus aureus bacteria and spores of Aspergillus niger fungus to survive, according to a study published in American Journal of Infection Control.

Researchers examined floor materials that were inoculated with a known concentration of S aureus and spores of A niger. They measured survivability after two days, one week, two weeks and four weeks.

The study shows S aureus saw positive growth by the second day for both the vinyl composition tile and porcelain tile . It declined slightly by day seven, but remained positive until day 28. However, researchers did not detecet S aureus on carpets by end of the first week, according to the study.

A niger spores survived on vinyl composition tile, porcelain tile and wood until day 28. However, the spores could not be detected on residential broadloom carpet and rubber-backed commercial carpet after the second day.

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