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Paper towels better at removing viruses than hand-dried air dryers, small preliminary studies suggest

 


According to a small preliminary study, paper towels are better than air dryers to get rid of residual bacteria if people don’t wash their hands properly.

The study conducted at a British hospital involved four volunteers, Bacteriophage, Or a virus that infects bacteria but not humans, to simulate contamination. In the public toilets of hospitals, I used paper towels and air dryers to dry my hands. Participants were also wearing aprons, so scientists could see if the insects reached their bodies and clothes while they dried.

After the volunteer was finished, the researchers wiped off the public and patient areas where the participants did Touched With hands or apron. These included parts for door handles, stair railings, elevators and access panels, chairs, phones, aprons, and stethoscopes.

The team found that both methods “significantly reduced” hand contamination after washing. But all surfaces Bacteriophage They said 6 times after air drying and after using paper towels. After using the dryer, the surface was on average 10 times more contaminated.

Bacteria were found in aprons and clothing in both scenarios, but were only found from the body to environmental surfaces after using the air dryer.

The authors conclude that: “There is a clear difference in the residual microbial contamination of the subject’s hands and body, according to the hand drying method.

“Importantly, the difference between these contaminants is that after using JD (jet dryer) and PT (paper towels), the level of microbial contamination is significantly higher across the toilet / washroom from the hands and body. I mean. ”

“Because public toilets are used by patients, visitors, and staff, the hand-drying method chosen may increase (JD) or reduce (PT) transmission of pathogens in hospitals.”

The authors planned to publish their work as an abstract in the European Parliament on clinical microbiology and infectious diseases. That is, there are no peer reviews. In this way, scientists publish their research findings and provoke discussion on the topic.

Donald Schaffner, A distinguished professor at Rutgers University, and an expert on topics including: Hand wash Those who are not working on research said Newsweek: “This study confirms previous studies showing that paper towels may help remove microbes from the next hand Hand washOr, they may simply show that the hands of the dryer spread less bacteria. “

Schaffner was asked to outline the potential uses of this work, especially in the COVID-19 pandemic. It will be handled properly. “

The main limitation of the study was that it wasn’t fully peer-reviewed yet, just a presentation at the conference, Schaffner said. It was also unclear whether the difference in bacteria transmitted to the surface was due to the dry hands of the participants after using the paper towel. Or if the bacteria were removed with a paper towel.

“The study would have been improved if the author checked the paper towels for the presence of the virus,” Schaffner said.

In the second website of COVID-19 Mythical Busters, World Health Organization Emphasized that using a hand dryer alone is not effective in killing new ones Coronavirus.

“To protect yourself from new things CoronavirusOften, your hands should be rubbed with alcohol-based hands or washed with soap and water. If you clean your hands, use a paper towel or a hot air dryer to dry them completely, “said a UN agency.

Paper towels, stock, getty
Stock image. Scientists have investigated whether paper towels or hand dryers are better at removing residual germs after hand washing.
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