A really interesting study from Rogawansamy et al explores the effectiveness of various anti-fungals on two common household fungal contaminants. They used a classic inhibitory disk assay, commonly used to test antibiotic efficacy and resistance. They tested Cavicide, Virkon, 70% ethanol, vinegar, and tea tree oil and found that the tea tree oil was most effective on both …
A new paper from Van Bonn et al studies the effect of a water change on the bacterial community of an aquarium. Unfortunately, only the abstract is available openly, but it seems pretty cool: The bacterial community composition and structure of water from an established teleost fish system was examined before, during and after a major water change …
We write a fair bit about antibiotic resistance on this blog, but seldom about the alternatives. Obviously, medicine shouldn’t avoid using antibiotics altogether, but we do need better management and use of our current anti-microbial compounds. We also need new methods of treating infection. Nature News has a brief but informative list of antibiotic alternatives written by …
A recent study from Su et al tests the effects of ultraviolet germicidal irradiation (UVGI) on the amount of culturable airborne bacteria in elementary school classrooms. As expected, they found lower concentrations of these bacteria with UVGI treatment. Only the first page of the paper is available, unfortunately, so perhaps this is already addressed, but it …
A 2015 paper from Casas et al (unfortunately no longer open access) investigated the effect of bleach on respiratory infections in young school-children. They analyzed information from Spain, the Netherlands, and Finland. Spain had the most instance of bleach use, which corresponded with a higher respiratory and related infections. On the other end of the spectrum, Finland …
Counter Culture Labs is a company that stemmed from an MIT iGEM team that made synthetic cheese. Their goal is to make vegan cheese that tastes just like the real thing with the single important difference being it is not derived from a cow, but rather a lab bench. Synthetic food is starting to trend. …
A recent NPR article raised the concern of drug-resistant food poisoning. Specifically, Ciprofloxacin-resistant Shigella. This strain was imported with US travellers coming from all over the world, but has now spread around the nation. Doctors are now starting to treat multi-drug resistant Shigella using IV instead of oral antibiotics. The article states: Multidrug-resistant Shigella has caused several outbreaks …
A recent study form Ling et al explored microbial community succession on concrete. They examined the concrete in two sewage manholes over a year using 16S rRNA sequencing. Concrete is a huge part of urban environments, and corrosive microbes eat it away. This causes structural damage, which is especially unwanted in sewage systems. The abstract for the …
A recent paper by Newton et al compares the microbial community composition in human stool to that of the sewage sludge that it inevitably ends up in. And surprise! The communities looked really similar. Sewage species recaptured most of the human stool species, and was essentially a medley of various gut microbes. The really cool part is how the …
When drainage systems fail, a lot of undesirable effects may follow, from leaks that cause mold to fecal-laden water contaminating groundwater and houses. A study from the Heriot Watt University in Edinburgh, Scotland found yet another concern we should have about broken or inadequate building drainage. Airflows in pipes can contain aerosolized pathogens and then escape into …