Austria to make basic face masks compulsory in supermarkets
reuters.com
reuters.com
tldr: There is reason to believe that large droplets, not the tiny droplets that N95s are designed to filter, are the primary threat, and any sort of physical barrier between those and your mouth/nose will help.
[0]: https://medium.com/@Cancerwarrior/covid-19-why-we-should-all...
""" kein Verstoß gegen das Gesichtsverhüllungsverbot vor:
Mund- und Nasen-Schutzmasken, Atemschutzmasken; Gesichtsverhüllung zum Schutz vor Frost """
Roughly translates to:
""" It is no violation of the ban on face covering:
Mouth and nose protective masks, respiratory masks; Face covering to protect against frost """
Source[1] https://www.oesterreich.gv.at/themen/leben_in_oesterreich/au...
Here in Slovakia masks or similar face-covering measures are semi-mandatory for 2 weeks already (mandatory since today) and it's non-issue. Many people know how to sew a decent-looking one using instructions from internet and some leftover cloth.
(just my opinion)
Lex Fridman made this research.based video about masks that you might find useful [0]. Take a look at the data; even a lousy scarf can provide some protection against virus particles.
Healthcare staff must protect themselves as well, so need real protective masks. So long as those masks aren't available to healthcare, we should avoid buying them in the rest of the population. In the meantime perhaps a lousy scarf can be used.
EDIT: Remember, though, that you can still be infected through exposed eyes, having virus on your hands and touching your face when taking off the mask, etc. Also, there was some evidence for rare cases of what looked like aerosol spread with the original SARS. In his recent interview on This Week in Virology Ian Lipkin mentioned a study in Beijing in the SARS outbreak where people with consistent mask use saw infections Ian Lipkin by 70% compared to no mask use. That's good but it isn't immunity.
Perhaps due to poor fitting, they were also seen as questionably effective and prone to making your safety googles fog up.
They need face fitting and some basic usage instructions.
If not correctly fitted they won't be effective, as air (like in more common "surgical" masks) will enter (and exit) from the sides.
Rough correspondence:
FFP2 is 94%
N95 is 95%
FFP3 is 99%
Source (an UK firm):
http://www.ashsafety.com/tips/filterClass.htm
> Finding a suitable respirator is not just a matter of choosing a model you like or by the cost of it. You may need to try different makes or sizes to find one that fits without leaking around the seal and letting dust in. A respirator that depends on face fit is ineffectual if you have a beard or thick beard stubble. The only way you can know if the seal is good enough is by having a proper respirator fit test. At present this is also the only way of meeting legal requirements.
And here is (again UK firm) how a fitting test works:
https://www.xamax.co.uk/blog/how-to-respirator-face-fit-test...
No N95 masks needed, those are needed for healthcare workers (and need to be replaced very frequently).
You most certainly:
don't need it
would reduce the amount available for people that need it
would wear it wrong
would wear it too long
touch it with your hands
would get a false sense of safety
The original research was made by PHE - Public Health England and the results are:
B atrophaeus - ~1um :
Surgical mask 96.35% filtering
Double layer tea towel 96.71% filtering
Bacteriophage MS2 - 23nm :
Surgical mask 89.52% filtering
Tea towel one layer 72.46% filtering
The full paper is on researchgate, title: "Testing the Efficacy of Homemade Masks: Would They Protect in an Influenza Pandemic?"
Also every super market should have the use of hand sanitizer obligatory at the entrance.
There is a pretty good video for simulations of the epidemic spreading [1] - it is not going to stop until we either have a vaccine or ~60% of the population have antibodies. So the choice is to sit the next 12-18months at home or we fight the transmission of the virus.
Masks cost nothing compared to the economic disaster that we are running into. The virus spreads via mouth and nose and secondary via the hands. So just stop it at the source.
Bacteriophage MS2 - 23nm :
Surgical mask 89.52% filtering
Tea towel one layer 72.46% filtering
-> Thus still ~70% filtering of 23nm particles for the one layered towel. They didn't put the number for a two layered towel in there, I wonder if it did beat the surgical mask.
>Bacteriophage MS2 - 23nm :
oops, misread the units!
* In February prime minister forbid hospitals to buy face mask and decided that he will buy them centrally and than distribute them to hospitals. In the begining of March when coronavirus appeared in Czech republic he also sent finacial control against face mask importers to ensure that they are not selling anything. He wanted to look as savior of the country but he wasn't able to buy any masks so for 2 weeks there were only 10 000 mask from reserves for the whole country. People started to sew mask at home and partially saved situation. After that prime minister made wearing mask mandatory which in my opinion is mainly PR to make the home made masks look like his own initiative. He also spreads fake news about Germany, Austria and other west European countries saying that they are not responsible and that they just copy Czech measures when it is too late. But in reality his administrative is really struggling without any plan and his main efforts go to PR.
I agree it's quite pointless for healthy not coughing person, but it's just easier to order everyone to wear them than checking one by one who is sick and who is not.
not sure how is mask wasted, if it's cloth mask you can just microwave it or boil it, if it's medical mask you can just leave it on sunny surface until it's for sure clean again or microwave it, same applies to respirator
in rest of the world maximum 9 days
So how does that work? No mask, sorry no groceries for you.
I get that. Just saying I don't think I could easily obtain one without going to a couple of shops (I'd need to try a few - no idea who stocks masks). People running around without masks to obtain masks sorta defeats the point.