Still, "the study clearly demonstrates the need for further research into this area," Imperato said.
The findings indicate that people should use disinfectants at the correct level and "not be tempted to dilute them down so that they go further in an attempt to save money," Fleming said. "Disinfectants work at the concentration stated on the bottle, but if they are diluted to a level where microorganisms can evolve, resistance can build up."
Also, it's important to give disinfectants time to work, he noted.
"I am concerned that if we do not use disinfectants properly in the home, that we might be affording microorganisms the opportunity of building up resistance to disinfectants and antibiotics," Fleming said.
"To put it simply, disinfectants are our first line of defense against harmful germs," Fleming added. "Antibiotics are our second line of defense in case of infection. Our study has shown that it is possible to corrupt the first and second line of defense. What then are we left with?"
Another study that was released last week illustrates the seriousness of the problem.
Researchers from a Washington, D.C.-based project funded by the Robert Wood Johnson Foundation reported that a particularly resistant bacteria is flourishing in hospitals across the country.
Poring over records from 300 hospitals, the scientists found there was more than a 300 percent increase in the proportion of Acinetobacter cases resistant to the last-resort antibiotic imipenem (Primaxin) between 1999 and 2006.
These infections, which typically surface in patients in intensive care units, usually lead to severe pneumonias or bloodstream infections, and even powerful antibiotics
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