Sunday, 19 August, 2018

Superbugs now also becoming resistant to alcohol disinfectants

Названа неожиданная опасность средств для мытья рук The bacterium is almost not treatable disease
Delores Daniels | 04 August, 2018, 01:52

Professor Timothy Stinea says, 'This is a wake-up call to infection control hospital teams around the world that if you want to control the emergence of VRE you need to do more than just rely on your alcohol-based disinfectants.

Professor Paul Johnson, a member of the team from Australian health service provider Austin Health, said: "Alcohol-based hand rubs are global pillars of hospital infection control and remain highly effective in reducing transmission of other hospital superbugs, particularly methicillin resistant Staphylococcus aureus (MRSA)".

VRE infections are some of the most hard to treat because the bacteria are resistant to many classes of antibiotic, including the "last resort" drug vancomycin.

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Writing in the journal Science Translational Medicine, the team said efforts to combat superbugs should focus on how bacteria become resistant to disinfectants as well as antibiotics.

Medical institutions worldwide started adopting stringent hygiene steps - involving hand rubs and washes that contain alcohol - in the last ten years, in a bid to tackle VRE and other bugs like MRSA.

Afterward, scientists scattered the bacteria over the floors of mice' cages and determined that alcohol-resistant specimens were more prone to penetrating and proliferating into the mice's viscera even after the researchers cleaned the cages' floors with a substance based on the isopropyl alcohol.

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Tim Stinear, a microbiologist at Australia's Doherty Institute who co-led the study, said that in Australia alone, use of the alcohol-based hand hygiene has increased tenfold over the past 20 years. They found the alcohol resistant strains in the mice poop and that both antibiotic-resistant and normal strains of the bacteria had the same rate of tolerance, which doesn't bode well for the future.

Despite the findings, scientists say this shouldn't prompt hospitals to stop using the products altogether.

They screened 139 isolated bacterial samples collected between 1997 and 2015 from two hospitals in Melbourne and studied how well each one survived when exposed to diluted isopropyl alcohol.

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