conuly: (Default)
[personal profile] conuly
Holy shit. I hope her job reimburses this expense. I just put a hefty amount of black ink on auto-delivery, and also paper.

In other news, we ran out of coffee, so I made an emergency run to the dollar store to get more. Nothing else would've impelled me to go there just now, but since I was there already I got more snacks, soup, milk, and bleach. They were sold out of butter, alas... I may have to brave the over-expensive Western Beef pricing! Talked to the cashier, she's stuck, when she's not at work, in a home with ten other people, only one bathroom. Puts my complaints about being cooped up in perspective!

Now, here's a thing I'm curious about. Two people I know - two people who are pretty reliable when it comes to this sort of thing, and whose opinions on science article abstracts I can trust - have recently linked me to this article, using it to back up a claim that use of cloth masks increases spread of disease compared to not wearing a mask at all: https://bmjopen.bmj.com/content/5/4/e006577

The reasoning around this makes sense - even careful users are going to have more moisture near the face, which may breed disease, and most people are not careful users and do all sorts of stupid things with face masks like lower and raise them willy-nilly. And, of course, there's not much quality control on the homemade cloth mask front.

However, the article does not seem to back this conclusion up at all, for the simple reason that they were not ethically able to put together a control group of hospital workers who don't wear masks, and their "normal use" group overwhelmingly used masks, so what you're comparing is "workers who use surgical masks" and "workers who use cloth masks". It's also not clear if the cloth masks were being changed with the same frequency as the surgical masks (twice a shift) or not. And, importantly, we definitely haven't established if using masks all day in a hospital gets results that can be generalized to the casual wearer who only wants to go out briefly to walk their dogs or buy butter.

(Other people, without citing any articles, have suggested that people wearing face masks may go out and about more and thus spread more disease. This is funny. The mere thought of having to breathe through a mask is enough to make me reconsider even the most dire of errands.)

So I don't actually know what to make of this article. Is there any data at all to back up the conclusion that face masks are riskier than no mask? Obviously I want the best and most accurate information so I can make the best choices.

Date: 2020-03-27 07:31 pm (UTC)
redsixwing: A red knotwork emblem. (Default)
From: [personal profile] redsixwing
Literally every study I have seen is comparing cloth masks vs surgical masks and finding that, unsurprisingly, the surgical masks win every time. I have seen nothing, despite increasingly strident annoyance with non-healthcare people who want to be safe, comparing cloth masks to no mask at all. (Well, we have a grand-scale experiment going: we can compare the curves in places that have people near-universally wearing masks to those that don't. Obviously I am not a statistician, but there are services out there to allow you to compare by things like 'cases per capita' and 'time from 100 logged infections.')

The CDC recommends the following for health care providers:

HCP use of homemade masks:
In settings where facemasks are not available, HCP might use homemade masks (e.g., bandana, scarf) for care of patients with COVID-19 as a last resort. However, homemade masks are not considered PPE, since their capability to protect HCP is unknown. Caution should be exercised when considering this option. Homemade masks should ideally be used in combination with a face shield that covers the entire front (that extends to the chin or below) and sides of the face.


No guidance for people going to the grocery store. *grump*

I'm coming down on the side of 'cloth masks are better than nothing,' but that's my opinion.

Date: 2020-03-27 07:33 pm (UTC)
cynthia1960: cartoon of me with gray hair wearing glasses (Default)
From: [personal profile] cynthia1960
If using a cloth mask frees up surgical masks for health providers, that's how I would decide things for myself.

Date: 2020-03-27 07:34 pm (UTC)
redsixwing: A red knotwork emblem. (Default)
From: [personal profile] redsixwing
Good point!

Edit: Found one, where at least the figures are public without a login. Still digging.

...oh look at that melannen found better ones. :D
Edited ( ) Date: 2020-03-27 07:41 pm (UTC)

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