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Study: Detergent Wet Wipes Spread Hospital Superbugs

By R&D Editors | June 11, 2015

Clinical detergent wet wipes used in hospitals across the U.K. show “huge variability” in their ability to eliminate so-called “superbugs,” according to the findings of a novel study led by Cardiff University.

Scientists also found that in every instance the wipes actually spread the superbugs from one surface to another.

The majority of U.K. infection control policies support the use of detergent-based products for routine cleaning in hospitals, with detergent wet wipes increasingly being used. Bacteria found on hospital surfaces lead to infection, resulting in longer patient stays and treatments.

Yet until now, there has been no information about the ability of clinical detergent wet wipes to remove disease-causing bacteria from these surfaces without spreading them. 

Related story: Contaminated Equipment “Superbug” May Have Killed Two, Infected 100+

Published online in the American Journal of Infection Control, a team of researchers from the University’s School of Pharmacy and Pharmaceutical Sciences have resolved to shed light on this issue.

They tested seven commercially available detergent wipes on three of the most common hospital infections, which include:

  • Staphylococcus aureus (MRSA) – can cause a wide range of infections from relatively minor skin infections such as boils, to more serious infections of the blood, lungs and heart.
  • Clostridium difficile diarrhoea – symptoms include a high temperature and abdominal cramps. Infection can lead to life-threatening complications involving severe swelling of the bowel.
  • Acinetobacter baumannii – highly contagious bacteria which can cause patients infections in the lungs, blood and brain. It can also cause urinary tract and wound infections.

How effectively the clinical wipes were able to eliminate superbug spores was gauged using a protocol based on the European standard method for chemical disinfectants.

The research team found that the wipes were very inconsistent in their ability to remove spores of the bacteria from hospital surfaces following a wiping procedure that lasted 10 seconds. Perhaps more concerning was that all wipes tested repeatedly spread significant amounts of bacteria over three consecutive surfaces.

“The rise of healthcare related infections has placed huge emphasis in recent years on cleansing and disinfection practices,” says Professor Jean-Yves Maillard from the School of Pharmacy and Pharmaceutical Science. “Hospitals need to be sure that the cleaning products they’re using are actually safe.

“This is the first report on the effectiveness of the most used detergent wipes in hospitals and what we’ve found is that in all too many cases they are not up to the job, with results showing huge variability.

“Our tests show that although the detergent wipes succeed in removing superbugs, they immediately transfer them when the wipe is used on a different surface.

“Wet wipes are generally good products, but the efficacy of these products can be improved. Hospital staff must be educated to ensure these products are used properly and will not cause an unnecessary risk to staff and patients — a single wipe should not be used on multiple surfaces.”

In 2012, there were 1,646 deaths involving Clostridium difficile infection in England and Wales; 292 deaths related to MRSA; and in a study of European intensive care units, Acinetobacter baumannii was found to be responsible for 19% of ventilator-associated pneumonia cases.

The research was funded by the School of Pharmacy and Pharmaceutical Sciences.

Release Date: June 10, 2015
Source: Cardiff University 

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