A new research study shows that biocides, which are commonly used in disinfectants and antiseptics at hospitals and homes to kill microbes, can make bacteria stronger if not used properly. If low levels of the biocides are used, bacteria can survive and become resistant to the chemicals. Researchers found bacteria make proteins that can remove antibiotics from cells and interfere with antibacterial effects, thereby making the bacteria resistant. When low concentrations of a variety of biocides were applied, the number of resistant mutant cells was increased so that over time, when exposed to biocides repeatedly, the bacteria built up resistance to disinfectants and antibiotics. Scientists say that careful use of antibiotics and biocides may reduce the frequency at which resistant strains are found.

As reported by The World Federation of Building Service Contractors.