#n95 respirators

[pandemic-info]

Re: Ask:

Your blog is one of the reasons I came back to Tumblr. Thanks for maintaining it! Would you mind posting reliable sources that you find on H5N1 , please? Don’t want to panic yet, but now that they found human-to-human transmission, should we?

Hey, thanks!

I just post as I organically see info, or seek it out as-needed, or what I learn in the course of my work — while trying not to be more focused on this than necessary. I'm glad it's useful for others, though there may be temporal and knowledge gaps. Like this one: I don't know as much about H5N1.

The latest I've seen are the articles about this case: US confirms first case of bird flu with no known animal exposure (bbc.com)

Yale News generally has solid info: H5N1 Bird Flu: What You Need to Know > News > Yale Medicine

If you already take layered precautions, you should be OK.

One question I personally had was whether H5N1 viruses (80-120 nm in diameter) are too small to be caught by N95 masks (which have a filtration efficiency of at least 95% for NaCl particles 100–300 nm in size.) USA Today actually has a nice Fact Check article about how masks work — in regards to COVID, but more broadly applicable and interesting:

TL;DR: yes N95s are also effective against viruses smaller than 300 nm.

Excerpts + more:

The size-based argument against N95 laid out in this claim assumes mask filtering works something like water flowing through a net — particles in the water smaller than the net opening pass through, while larger items don’t. But the physics involved don’t work like that at all. The COVID-19 particle is indeed around 0.1 microns in size, but it is always bonded to something larger. “There is never a naked virus floating in the air or released by people,” said Linsey Marr, a professor of civil and environmental engineering at Virginia Tech who specializes in airborne transmission of viruses. The virus attaches to water droplets or aerosols (i.e. really small droplets) that are generated by breathing, talking, coughing, etc. These consist of water, mucus protein and other biological material and are all larger than 1 micron. “Breathing and talking generate particles around 1 micron in size, which will be collected by N95 respirator filters with very high efficiency,” said Lisa Brosseau, a retired professor of environmental and occupational health sciences who spent her career researching respiratory protection. ... The N95 filter indeed is physically around the 0.3 micron size. But that doesn’t mean it can only stop particles larger than that. The masks are actually best for particles either larger or smaller than that 0.3 micron threshold. “N95 have the worst filtration efficiency for particles around 0.3,” Marr said. “If you’re smaller than that those are actually collected even better. It’s counterintuitive because masks do not work like sieving out larger particles. It’s not like pasta in a colander, and small ones don’t get through.” N95 masks actually have that name because they are 95% efficient at stopping particles in their least efficient particle size range — in this case those around 0.3 microns. Why do they work better for smaller ones? There are a number of factors at play, but here are two main ones noted by experts: The first is something called “Brownian motion,” the name given to a physical phenomenon in which particles smaller than 0.3 microns move in an erratic, zig-zagging kind of motion. This motion greatly increases the chance they will be snared by the mask fibers. Secondly, the N95 mask itself uses electrostatic absorption, meaning particles are drawn to the fiber and trapped, instead of just passing through.

Only one qualm about that article: it's from 2020 and at the time, based on faulty older science, it was thought that droplets were the big concern and that "there’s not a lot of evidence for aerosol spread" — we've now known for years that this is false: "SARS-CoV-2 primarily spreads through airborne transmission, which is mainly characterized by droplets and aerosols."

It's interesting that they quoted Linsey Marr in that Fact Check because: The 60-Year-Old Scientific Screwup That Helped Covid Kill | WIRED

And H5N1? I'm honestly uncertain, but found this: Aerosolized Exposure to H5N1 Influenza Virus Causes Less Severe Disease Than Infection via Combined Intrabronchial, Oral, and Nasal Inoculation in Cynomolgus Macaques - PMC (nih.gov)

[feminist-space]

"Seminario cited the recent report, “Employer-Reported Workplace Injuries and Illnesses,” that shows that the number of respiratory illnesses in the private health care and social assistance sector increased from 145,300 in 2021 to 199,700 cases in 2022, an increase of 37.5 percent.

...

As an industrial hygienist, Seminario was extremely critical that there were no experts in respiratory protection on the committee nor did it include engineers who developed ventilation guidelines. She believes that the HICPAC committee members are likely so opposed to respirators “because once you are into recommending respiratory protection, with that comes a full respiratory protection program from OSHA,” with penalties for violations.

An epidemiologist and consultant, Michael Olesen, echoed this, believing the changes reflect “pressure to remove liability from hospitals.” He added, “I take a very clear position that we should be having respiratory protection mandates in all healthcare settings right now.”

...

Many patients who spoke at the HICPAC meetings said they had gotten Covid-19 when they went to the hospital and that the new policies were keeping them from getting care.

Given that, Dr. Art Caplan, professor of medical ethics at New York University’s Grossman School of Medicine, previously told me that dropping masking requirements in hospitals is “utterly, completely, irresponsible.” Similarly, staff refusing to mask, even when a patient requests it, is a moral failure. “The first principle is, you must do what is in the best interest of your patient,” he said.

...

Several people were asked why they believe HICPAC is determined to water down protections. Consistently, respondents say, “to reduce liability.” Earlier in the pandemic, hospitals regularly tested patients and staff for Covid-19, and you could often tell where and how you became infected. Since staff are no longer masking and continue working when ill, and patients are not being tested on admission, you can no longer prove who infected you. Hospitals are the only ones who win in this scenario, absolving themselves of responsibility and liability."

[willowreader]

Dame Sa  3.5%

@LongCovidHell

Sheep? Those who wear a mask are the total opposite! Despite mounting peer pressure, constant propaganda in the press, and government lies, we STILL stand up against forced mass infection of a SARS virus. Wearing a mask is an act of rebellion, not submission.

From Twitter (X) The only thing that is wrong with the picture is the man should be wearing a respirator (N95).

[pokabrows]

If you can afford it now might be a good time to stock up on N95 respirators or invest in an elastomeric reusable respirator that you won't have to replace the filters in as often.

N5H1 (bird flu) has been transmitted to humans a bunch of times independently, most recently in Texas. So far it seems like the death rate is close to 50% so it's pretty scary. The concern is if human to human transmission starts. It will likely be worse than covid at least in the acute stage. Also like measles and tuberculosis have been popping up more recently.

So basically start getting prepared before people start panic buying. If demand ramps up more slowly and people start buying supplies early there will be more supplies for everyone. Plus you and your family will be better equipped. The preppers on reddit are already starting to prepare.

[humandisastersquad]

PSA: if you’re vaccinated you can still catch and spread covid. Wear a mask, or even better yet, an N95 or equivalent respirator

[doomer-diva]

Respirator Crusaders unite!!!

[pandemichub]

The Project N95 shop will remain OPEN until December 15th, 2023.

Reblog to circulate post on Tumblr

I'm uncertain if there's a way to save this non profit but I'd like to encourage us all to try. We already lost another this past year 'Body Politic' because they did not get the financial supported needed to continue, which included expansion to be able to operate well.

Part of building community and a better future involves investing. And we cannot hope to have resources, infrastructure and responses to meet the progressive derailing and degrading conditions and societies around us without doing so.

It requires time, energy, heart and sometimes yes, money. The more we put into projects like this, local and small companies, sustainability, kindness, deconstructing & decolonization and less of ourselves and resources into people, organizations and projects that do not care about us or are harming us, we actually have a road to the bright possibilities we hope and speak of so beautifully.

[ryanthedemiboy]

Mold will grow in your lungs. You often can't see mold before it can get into your lungs. Wear a respirator.

kids these days don’t know how lethal stagnant water is

[pandemic-info]

(via (2) Ever Bloom 💉💉💉💉😷 on Twitter: "@FitTestMyPlanet @safe_breathe Do you mind saying if you’ve an idea why the black BNX trifolds perform comparatively poorly? They’re the only N95s my teens will wear - and don’t seem to perform at all well compared to, for example, the 3M Auras? Perhaps lack of foam nose piece prevents good seal? Thx 🙏🏼" / Twitter)

Various N95s fit-tested + helpful answers in thread.

E.g. Which work best for small faces?

For N95’s, the highest harmonic mean fit factors that @dachshundDsh (NIOSH face panel size #3) got was Aura9210+ for N95’s. (Same mask that set the N95 record on the large head too.) Same story for FFP3’s. @dachshundDsh set records on Drager1930small, and the panel 8 size large head also set records on the Drager1930small. She prefers the Aura 1863+ though since the Drager1930 looks scary.

[willowreader]

There are some good recommendations for masks in this article. There are many mask wearers who have protected themselves from not getting COVID even once. Masks work!

[humandisastersquad]

love the little nod of acknowledgement i get from the few fellow mask (particularly respirator) wearers out and about. like yes, finally, someone else giving a shit about this pandemic amidst the sea of maskless plague rats

[astrid-goes-for-a-spin]

If this post crosses your dash and you’re still masking, thank you.

If you’re not, it’s never too late to start. Do some research and order some N95s. And if that’s not affordable, check if your community has any mask-focused mutual aid efforts. Even if it doesn’t, there are numerous people on twitter who mail respirators to requesters all over the world!

does anyone else think it’s crazy how we just casually reference “the pandemic” now. i catch someone in conversation saying “during the first quarantine…” and as comfortable as it feels to hear and say now, there’s still a twinge of like…. i cannot believe we’re using these words in real life in reference to real events. this isn’t a scifi movie this isn’t a young adult post apocalyptic novel we’re literally casually discussing a global pandemic that ravaged the entire world and it was REAL ?

[pandemichub]

"Proceeds from the Project N95 shop and financial contributions from our donors are no longer enough to support our charitable mission. We have made the difficult decision to wind down operations and donate remaining inventory and funds in order to do as much good as possible with our limited remaining resources."

[counterintuitivecomics]

MASK UP FOR GLOBAL LIBERATION

Protect your community by wearing N95s and KN95s when meeting indoors or in crowds! The more of us mask up, the less we get sick, the harder it is for police to surveil us, and the safer we make our shared spaces for our disabled and immuno-compromised comrades and loved ones.

Get started by finding local mask resources on the global COVID Action Map (you can also submit groups to be added). If you have the means, donate masks and tests to your local orgs and encourage accessibility so we can ALL join the fight (bringing in interpreters/translators and medics, ensuring accessibility for wheelchairs/mobility devices, offering child care, filtering the air indoors, setting up virtual options etc).

UPDATE: Download this 8.5"x11" poster for free on itch.io to print and distribute! Includes files suitable for color, black and white, and risograph printing. Any donations will go to printing costs, or buying masks for my local mutual aid groups.

Pandemics have no borders, and all our struggles are united!

[ID: A poster declaring “MASK UP” in red above 3 figures from the waist up, each wearing a different respirator mask. The top figure is an Arab person wearing a fluttering red and white kufiyah over a black hijab and red dress, as well as an Aura 9210+ N95 mask. They steady themselves with one hand on the lower left figure, and raise the other one up triumphantly. The left person is a fat Asian teenager wearing a black hoodie with a genderqueer symbol on the shoulder, and a black Laianzhi HYX1002 KN100 mask. They are holding a box labeled FREE that’s full of COVID-19 Rapid Tests, and two different kinds of plastic-wrapped N95s. The last figure is a middle aged Black person in a power chair, wearing a Flo Mask with a customised rainbow cover, a dark blue winter hat with a Disability pin on it, and a blue shirt featuring 6 countries flags from R to L: Sudan, Democratic Republic of the Congo, Palestine, Haiti, Puerto Rico, and Tigray, Ethiopia. Underneath reads: “RESPIRATOR MASKS PROTECT: your health, your identity, and your community. Find resources near you at COVIDActionMap.org”]

[thistlecrimes]

Things I've learned from getting covid for the first time in 2023

I wear an N95 in public spaces and I've managed to dodge it for a long time, but I finally got covid for the first time (to my knowledge) in mid-late November 2023. It was a weird experience especially because I feel like it used to be something everyone was talking about and sharing info on, so getting it for the first time now (when people generally seem averse to talking about covid) I found I needed to seek out a lot of info because I wasn't sure what to do. I put so much effort into prevention, I knew less about what to do when you have it. I'm experiencing a rebound right now so I'm currently isolating. So, I'm making a post in the hopes that if you get covid (it's pretty goddamn hard to avoid right now) this info will be helpful for you. It's a couple things I already knew and several things I learned. One part of it is based on my experience in Minnesota but some other states may have similar programs.

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The World Health Organization states you should isolate for 10 days from first having symptoms plus 3 days after the end of symptoms.

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At the time of my writing this post, in Minnesota, we have a test to treat program where you can call, report the result of your rapid test (no photo necessary) and be prescribed paxlovid over the phone to pick up from your pharmacy or have delivered to you. It is free and you do not need to have insurance. I found it by googling "Minnesota Test to Treat Covid"

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Paxlovid decreases the risk of hospitalization and death, but it's also been shown to decrease the risk of Long Covid. Long Covid can occur even from mild or asymptomatic infections.

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Covid rebound commonly occurs 2-8 days after apparent recovery. While many people associate Paxlovid with covid rebound, researchers say there is no strong evidence that Paxlovid causes covid rebound, and rebounds occur in infections that were not treated with Paxlovid as well. I knew rebounds could happen but did not know it could take 8 days. I had mine on day 7 and was completely surprised by it.

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If you start experiencing new symptoms or test positive again, the CDC states that you should start your isolation period again at day zero. Covid rebound is still contagious. Personally I'd suggest wearing a high quality respirator around folks for an additional 8-9 days after you start to test negative in case of a rebound.

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Positive results on a rapid test can be very faint, but even a very faint line is positive result. Make sure to look at your rapid test result under strong lighting. Also, false negatives are not uncommon. If you have symptoms but test negative taking multiple tests and trying different brands if you have them are not bad ideas. My ihealth tests picked up my covid, my binax now tests did not.

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EDIT: I'd highly suggest spending time with friends online if you can, I previously had a link to the NAMI warmline directory in this post but I've since been informed that NAMI is very much funded by pharmaceutical companies and lobbies for policies that take autonomy away from disabled folks, so I've taken that off of here! Sorry, I had no idea, the People's CDC listed them as a resource so I just assumed they were legit! Feel free to reply/reblog this with other warmlines/support resources if you know of them! And please reblog this version!

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I know that there is so much we can't control as individuals right now, and that's frightening. All we can do is try our best to reduce harm and to care for each other. I hope this info will be able to help folks.