Short cycle length certainly makes sense to be correlated with pathogens. The lousy LG "TurboWash" only takes 28 minutes to do a full load of laundry but certainly doesn't get very much clean in that time.
I have to admit it was surprising that textiles have been identified as the source of hospital acquired infections. You'd think that even if the laundering didn't eliminate pathogens, it would greatly reduce them and make any clusters more diffuse.
> Two commonly used UK washing detergents were selected for the assay: a non-biological liquid detergent (15-30%:Anionic surfactants; 5-15%:nonionic surfactants; <5%:phosphonate, perfume, soap, optical brighteners, methylisothiazolinone, octylisothiazolinone) and a non-biological powder detergent (5-15%: oxygen-based bleaching agents, anionic surfactants; <5%: nonionic surfactants, polycarboxylates, soap, perfume, phosphonates, optical brighteners, zeolites)
This doesn't really mean anything to me, but maybe it means something to you?
In some sense I think the real takeaway from the study is "we shouldn't be having healthcare workers wash their own patient/pathogen facing uniforms", and that takeaway seems robust against the hypothesis that only some detergents would solve the problem. As a population we can be sure that some of the healthcare workers are going to use the detergents that don't solve the problem.
> Each wash cycle was performed with either biological (14g per kilogram of fabric) or non-biological detergents (20g per wash).
But your quoted passage describes two non-biological detergents. So did they use a biological detergent or not?
Anyway, the first one sounds like Persil liquid:
https://www.ocado.com/products/persil-laundry-washing-liquid...
> 15-30%: Anionic surfactants. 5-15%: Nonionic surfactants. <5%: Perfume, Phosphonates, Soap, Optical brighteners, Methylisothiazolinone, Octylisothiazolinone
And the second one sounds like Persil powder:
https://www.ocado.com/products/persil-fabric-cleaning-washin...
> 5-15%: Oxygen-based bleaching agents, Anionic surfactants. <5% Nonionic surfactants, Polycarboxylates, Soap, Perfume, Optical brighteners, Zeolites, Tetramethyl acetyloctahydronaphthelenes
Not quite the same, but similar. Both are perfectly normal brand-name household laundry detergents.
It depends on what experiment in the paper you are looking at.
The supplemental section is addressing the "Laundry detergent tolerance induction assay" (a heading you can ctrl-f for) where they only used the non-biological detergent, "as biological detergent contains enzymes and other potentially disruptive components that may influence the assay".
If you go to the results section you will see results for both the biological and non-biological detergent under "Decontamination efficacy of domestic laundry machines" and so on. I didn't see anything specifying what biological detergents were used.
Surely the only scalable solution in a medical context is to get workers to change out of uniform at work and hand over to industrial laundry service, everything else relies on procedure outside the work environment which not everyone is going to do reliably and is difficult to supervise / QC.
But my state has also made it illegal to prohibit the use of clotheslines, a "right to dry" law.
I remember finding a lawsuit, if I remember correctly, between Samsung and a certain municipality of an unremembered state.
The patent involved a lining within surfaces of the washing and drying systems for hospitals which impart silver particles. The marketing part suggested it would spare x amount of bleach and have equal or greater efficacy.
The municipal water waste management objected based on the breakdown phase of the sewage relying on bacteria. The silver, they surmised, would obviously hinder this process and so on.
Then, as a side note, you have products from waste management called eg Sludge, which is used as fertilizer. Supposedly it is forbidden on vegetable crops, but I once interviewed a cattle rancher who said his subsidies were dependent on his acceptance and use of Sludge.
Further aside, the real problem here is the 'forever chemicals' that accompany these products. It tends to permanently compromise the land it's used on.
I remember the rancher telling me he's seen his cows chewing on condoms.
Do you also sterilize your kitchenware? Well, given the population bias of HN, probably some of you do, but the vast majority of humankind do not. If you don't sterilize things you put into your mouth, I don't see why you'd expect this for clothes.
So it is amazingly unsurprising that consumer washing machines don't sterilize clothes. Just as you need to take extra care to sterilize kitchenware when you're doing anything fermenty, hospitals shouldn't have been relying on home washing machines.
tuatoru•6h ago
That would never be allowed in the food industry.
iaaan•6h ago
tacker2000•6h ago
But i never worked in a restaurant, just guessing here.
ender341341•6h ago
Brian_K_White•5h ago
LadyCailin•5h ago
bombcar•5h ago
Probably helped it was a hotel ...
hoten•4h ago
forgetfreeman•4h ago
closewith•6h ago
Things like scrubs exchange machines and central laundries washing staff gear is rare even in hospitals in the developed world.
nadir_ishiguro•6h ago
I think this should be taken care of by the employer.
forgetfreeman•4h ago
dylan604•5h ago
lotsofpulp•4h ago
jerlam•3h ago
zabzonk•5h ago
PaulDavisThe1st•4h ago