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A horse walks into a bar. The bartender asks the horse if it's an alcoholic considering all the bars he frequents, to which the horse replies "I think not!" POOF! The horse disappears.
This is the point in time when all the philosophy students in the audience begin to giggle, as they are familiar with the philosophical proposition of Cogito ergo sum, or I think, therefore, I am.
But to explain the concept aforehand would be putting Descartes before the horse.
If you need desinfectant, just buy pure alcohol. It's cheap and abundant.
On the serious side:
In Norway it is certainly not "cheap and abundant". You may know a home destiller, with his illegal activities, but those with quality products are few and far between. The strongest you can buy in the licour stores is 60%, but according to medicals, it should be between 75 and 80% - but not any stronger.
Yet... When asking about the effect of antibaceria aids on viruses in Norwegian media, it came out (amidst the general outcry of "Never ever question advice given by health officials!") that various viruses have quite different reactions to acohol and other antibacterial measures. I have searched in vain for specific information about the Corona. Nowhere have I found trustworthy, reliable information from an health authority source saying anything specific about how Corona compares to other viruses regarding alcohol/antibac.
Honestly: I would think that this could be easily tested out and reported. I am quite sure that the health autorities do know. But nowhere do they make any Corona specific claims about the effect of alcohol/antibac.
Obviously: Making sure that your body is not weakened by any other bacteria infection makes you better prepared to stand up against Corona. So it is not a bad idea to use alcohol/antibac to fight those other threats. But I wouldn't at all be surprised if we, half a year from now, say that "Alcohol/antibac had no real effect on the Corona itself. The 'mechanical' removal, flushing it down the drain through hand washing was significant. The chemical side of alcohol/abtibac: Not so".
I just can't understand why health authorites are so reluctant to tell openly how sensitive (or possibly: non-sensitive) Corona ia to alcohol / antibac, compared to other viruses.
In Norway it is certainly not "cheap and abundant".
Alcohol does not necessarily mean ethanol. Most hand sanitizers probably use Isopropyl (rubbing) alcohol which should be available in drug stores, Walmart type stores, or hardware stores (paint department?) for a lot less than Drinkin' Alcolhol. A liter or Vodka around here will set you back at least $40. A liter of Isopropyl is about $7. So cheap, and unless the hoarders have twigged on to it, its probably plentiful, too.
Yet we know nothing about the real effect of neither ehanol nor isoproly on Corona. Is one effective, the other one not? Is either "marginally" effective, the other one "immediately"?
Briefly stated: There is no reliable information about how corona reacts to either ethanol nor to isopropyl.
I am really surprised that there isn't. I would think that it would be quite simple to come up with something Corona-specific to justify the one or the other.
I gemerally trust health authorited. But when the just hammer in "Use antibac! Use alcohol", and when you ask them for concrete evidence that it has a real effect on Corona (not on national health in general as seen in a ten year perspective), then I start questioning it. I have learnt that such questioning is BAD, and should not be brought to the public. Nevertheless, inside my own enclosed cave, I dare to ask myself: If they can't display the effect on the corona, why are they then pushing it so intensively?
So it is not a bad idea to use alcohol/antibac to fight those other threats. But I wouldn't at all be surprised if we, half a year from now, say that "Alcohol/antibac had no real effect on the Corona itself.
I would be. Similar to news that Corona can survive on silver.
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"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
Since I live in a biomedical cluster I have some friends/acquaintances that are in the knowledge of the hows and whys. (One professor and two doctors in microbiology)
And still I haven't been able to get a clear yes or no answer.
Anyway, here goes the theory:
In the case of bacteria you want to desiccate them and for that the optimum percentage is between 70-85% ethanol.
Corona viruses are encased in a lipid shell.
Lipids are waterproof but soluble in alcohol. So here the aim is for dissolving them, which means, go for strength.
How efficient is it? This is where it gets blurry.
Consensus seems to be that washing your hands is probably more efficient, but it doesn't hurt to use alcohol as well. Unless you overdo it and get dry skin with cracks in it where virii and bacteria can hide.