In a study published in the journal Frontiers in Microbiomesa team from Northwestern University (Illinois – United States) analyzed samples from used toothbrushes and samples taken from shower heads. Researchers identified more than 600 different viruses, with each sample exhibiting a unique composition.
But rest assured, these viruses do not target humans but bacteria. These are bacteriophages, viruses that infect and replicate inside bacteria. Although little known, these phages are attracting growing interest for their potential in the treatment of antibiotic-resistant bacterial infections.
Hope against certain diseases
« The number of viruses we found is absolutely staggering said Erica M. Hartmann, principal investigator of the study.
« We have discovered many viruses that we know very little about and many more that we have never seen before. It’s incredible to see the scale of unexploited biodiversity that surrounds us, right under our noses.. »
Researchers have noted a prevalence of mycobacteriophages, viruses that infect the mycobacteria responsible for diseases such as leprosy, tuberculosis and chronic lung infections. This discovery could open up new perspectives for the treatment of these infections.
« Germs are everywhere, and the vast majority of them won’t make us sick », continue Hartmann. « The more we attack them with disinfectants, the more likely they are to develop resistance or become more difficult to treat. We should all accept them. »
The researcher therefore advises against the excessive use of disinfectants, which could encourage the development of resistance. Instead, she recommends simple maintenance methods like cleaning shower heads with vinegar or soap, and replacing toothbrush heads regularly.
