Discover and read the best of Twitter Threads about #N95

Most recents (24)

@prof_nch (1/?) Profs thinking it’s ok to exercise privilege & unmask to teach in indoor classroom of students who must attend or possibly fail class—either have COMPLETELY NO understanding that 1)#aerosol is main transmission route for #COVID19; 2) how aerosol transmission actually works;
@prof_nch (2/?) 3) #Delta is hypertransmissible with rate of 1 infecting on avg 5-7 more vs earlier strains 2-3 more; 4) most infected don’t know they’re infected when they are at their most infectious because symptoms only show after peak infectiousness—if ppl not asymptomatic; …
@prof_nch (3/?) most have no real functional understanding of indoor air quality in own classrooms & rely solely on air system filtration—don’t monitor it with CO2 meters, keep windows/doors open; 4) don’t think about minimal acceptable air quality vs ‘good/excellent’ by #ASHRAE standard;
Read 12 tweets
“One study…found…#schools that required #masking had…37% lower incidence of #COVID19…Another study…found…high levels of #mask wearing among students helped keep…rate of in-school spread…to under 1%…as…cases were surging in the wider community.”
@mgodoyh goes on:
“Not masking could be disastrous for schools, says Julie Swann, a department head and professor at North Carolina State University who leads a #COVID19 forecasting team funded by the @CDCgov
Adding handful (4) of tweets from experts on #Masks in #Schools 🧵here:
1st, former @Surgeon_General @JeromeAdamsMD reminds us #PPE good enough for doctors in the hospital can help mitigate spread in our schools, including high quality, fitted & authentic #N95 #masks.
Read 6 tweets
Important #CDC update yesterday improves guidance on mask quality & fit; now recommends #N95 respirators as one option for #BetterMasks. (1/x)

Updates like this don't just happen. People like @kprather88 & @linseymarr have been pushing behind scenes. 🙏…
2/ Also important: N95s are not limited due to a supply chain shortage. True for months and why the CDC finally updated their guidance yesterday.
@projectn95 is a non-profit that provides a marketplace for vetted masks at low price:
3/ Any mask is better than no mask, but given the highly contagious Delta variant that now dominates, you should wear the best mask you can. See this great interview clip with @mtosterholm motivating the use of upgraded masks:

Read 14 tweets
🧵 Here's my honest advice about masks from an American manufacturer of #surgicalmasks & #N95s @armbrust_usa

(Spoiler Alert: most suggestions wont be to use my masks)

First, why does the CDC give "bad" advice about masking?

Guidance is based on statistical models. Cloth or loose fitting masks DO reduce spread for populations.

But you are not a statistic, you are a data point. You don't want statistical advice.

If you want the best protection you need both proper fit to your face AND good filtration.

You can tell if something fits your face, but you can't tell the filtration unless you have an expensive lab like I do or if you're an expert like @masknerd

Read 15 tweets
I’m too familiar with #Covid19 as an ICU physician taking care of patients with covid every shift since the pandemic started. This week I had the misfortune of being on the other side, and my eyes have opened to what awaits us in Broward County and beyond with #DeltaVariant 1/13
Our family’s outbreak started at our elementary aged daughter’s camp. First one case, then two, then camp shut down and sure enough 3 nights later my daughter’s fever began. 2/
Thankfully she hasn’t been very sick, but this opened my eyes to how poorly prepared we are for school this year. Her camp followed all the precautions that kept most kids safe last spring: universal masks, distance while eating, etc, but it wasn’t enough with #deltavariant. 3/
Read 13 tweets
A 🧵 to counter some confusing messages about masks & wildfire smoke (1/x)

1. High-quality masks (i.e. #N95) best for both viral aerosol + #wildfire smoke
2. N95s readily available & should be used for both
3. But other masks can provide non-zero benefit…
2/ The #CDC and #EPA both strongly recommend upgraded masks (respirators) like #N95 or #KN95 to protect against wildfire smoke. I totally agree (unless using something even better like N99 or elastomeric), b/c these filter the smallest particles very well.…
3/ But the #CDC also says not to use N95s, b/c they "should be reserved for health care workers." I totally disagree, as do countless others, b/c supply chain problems in 2020 have recovered in the US.

Follow @projectn95 & see resources to easily buy.
Read 15 tweets
This interview with @mtosterholm is 🔥. One of the clearest & most succinctly accurate 6-min summaries of where we are with Delta/COVID mitigation, masks, & vax (best part starts at 1:30).

#VaxUp #BetterMasks #N95 #MasksInSchools
A few quotes below. h/t @PPEtoheros, @citlanx
"This virus is an #aerosol. It’s transmitted in the air, just like we see with cigarette smoke. If you’re in a room and you have a covering on your face and you can smell* the smoke, then you know you’re also getting virus in there if in fact you had an infected person in there."
* (Editorial comment on the smoke smell comment. Aerosols in smoke come out as a concentrated plume, waft through the air, & build-up indoors. But the smell is from the gases & can go through masks, whereas aerosols are blocked. Good visual analogy, but it breaks down at smell).
Read 7 tweets
#GetVaccinated vs. #COVID. Vaccines stave off hospitalization, death and even worse for some people, sexual performance. Let's discuss some of the math, pros and cons, and adverse effects and that sexual performance thing. THREAD:…
2/ Most who are dying or are being hospitalized are unvaccinated. The vaccines don't give 100% immunity, but they are free, easy, painless and provide good protection. They also greatly decrease the impact of COVID if you do get it.…
3/ COVID vaccines don't magnetize you and are too small to insert a tracker. Regardless, the government can already track you through your phone, computer, email, credit cards, social media, etc., etc., etc. Fully vaccinated folks are now <1% of deaths.…
Read 23 tweets
💡UPGRADE TO PREMIUM MASKS—"We need to talk about #BetterMasking. We need to talk #N95 Respirators—would do a lot for both people who are not yet vaccinated & protect others who might become infected." ➡️ WE NEED KN95/N95/ELASTOMERIC for #DeltaVariant.🧵
2) 7 months ago, I called on everyone to switch to premium masks when the #B117 #AlphaVariant was surging. Since then FFP2 and KN95 masks have become super cheap and common. Even N95 respirator has now become more common as well. And Elastomeric respirators are more common too.
3) Lots of studies show that the respirator-grade premium masks are what we truly need. The leaky partial protection of cloth and flimsy unfitted surgical alone just not enough.
Read 9 tweets
I keep thinking about articles discussing importance of being both #VaxxedAndMasked. Some comments via 🧵. (1/x)

Data shows:
✔️ Vax safe & wildly effective
✔️ No vax 100% (think raincoat or sunscreen)
✔️ Masks very effective
✔️ Both help indiv & public health
✔️ Delta is a beast
2/ Through hard work we know:
✔️ COVID could spread by several routes
✔️ Airborne aerosols likely to be a critically important piece of that spread
✔️ We can reduce w/ masks, distancing, reducing #SharedAir
✔️ Vax reduces number & severity of infections…
3/ So if the only factor (indiv or collectively) is to provide the best protection, the answer is clearly to #VaxUp ASAP & to still #MaskUp in crowds or indoors w/ anyone who is unvaxxed. Delta is dangerous & many not yet protected.
Read 17 tweets
Why should vaccinated people wear masks? Seven points outlined by @Bob_Wachter in article by @amyjeangraff & in 🧵 with his reasoning below.

I'm still very careful about taking off my #N95 mask in mixed settings & support #mask mandates for schools.…
1) The rate of breakthrough infections is small but very real.
2) The rate of breakthrough infections with delta is likely somewhat higher than with the original virus; this number is still being debated.
3) Delta might be more likely to lead to a serious infection than the original virus.
4) Though the chances of long COVID with a breakthrough infection seem to be low, there is no rigorous evidence on this & we certainly have seen mild primary infections cause prolonged symptoms.
Read 6 tweets
Short 🧵to address this comment. The public do not need to be fit tested in order to wear an FFP3/N99 or FFP2/N95 mask. Here's why: 1/
2/ Fit testing is a procedure which employers are legally obliged to undertake to ensure the safety of workers in dusty industries. It ensures that respirators fit so that workers are protected from the constant exposure to potentially toxic dusts, that they receive over a shift. Image
3/ Whilst it would be great to fit test the public, it is not practical or possible. Nevertheless, FFP2/3 N95/99 masks are widely used, especially in humanitarian crises, by the public and are even donated by major mask manufacturers, for public use, during these crises.
Read 10 tweets
Das Robert Koch-Institut (#RKI) und die
"wissenschaftliche #Evidenz" in der Corona-#Pandemie
Ein Jahrhundert vor der Corona-#Pandemie leistete Dr. #Wu Lien-teh Pionierarbeit: Er erkannte, dass sich die #Lungenpest über die #Luft ausbreiten konnte, und mahnte, Menschen sollten zum Schutz #Masken tragen… Image
#Mesny, ein bekannter französischer Arzt, verunglimpfte Wu und weigerte sich, eine #Maske zu tragen. Er starb an den Folgen der #Lungenpest. 60.000 Wu-#Masken halfen die #Epidemie unter Kontrolle zu bekommen. Die heutige #N95-Maske ist ein Nachkomme der Wu-Maske
Read 34 tweets
Logik zum #Öffnungsplan der #Bundesregierung
Wo, wie und wie schnell infiziert man sich mit dem #Coronavirus? Solange die Regierung Entscheidungen - magels Datenlage - ohne Evidenz trifft, solange ist es Willkür, wann welche Bereiche geöffnet und andere geschlossen bleiben #Spahn
Die Mutante #B117 erreicht in diesen Tagen -in den ersten Bundesländern- ihre #Dominanz. #R steigt zeitgleich und die #Regierung erhöht per #Öffnungsplan die #Mobilität: B117, Öffnungsplan u. gesteigerte Mobilität sind drei Faktoren die logisch #R exponentiell beeinflussen können
Zeitgleich werden #Kitas u. #Schulen geöffnet, also die Versammlungsorte, vor deren Öffnung uns Experten und Ärzte aus #Israel u. Kanada warnen. Begründet wird die #Öffnung mit "Meinungen" von Wissenschaftlern, deren #Studien -manipulierte Daten- aus #Schweden zitieren #twlz #KMK
Read 243 tweets
1/ In context of extra precautions against new COVID variants, some new questions pop up about #masks.

Article by @cwarzel @zeynep asks/answers some good questions to start. Other thoughts in a 🧵, e.g. N95s, fit (Tw7+ ⬇️), when to replace (Tw25 ⬇️), etc.…
2/ Countless recent articles w/ interviews from relevant experts imploring people to still take mask-wearing & overall airborne COVID health seriously.

One of many, here by @skbaer w/ broad contribution. (Tw33 below has link to a compilation of more).…
3/ Many good arguments recently towards motivating broader use of #bettermasks, i.e. #N95s. So if not using already, consider.

See e.g. this editorial by @j_g_allen:…

Or this opinion-piece by a group of excellent scientists:
Read 33 tweets
Study showing nosocomial (in hospital) transmission of COVID to HCWs despite surgical masks & distancing.

Important b/c:
1) Virus aerosolized w/o AGPs; only possible if airborne
2) Surgical masks insufficient (weak filtration; bad leakage)
via @CPita3 1/x…
2/ Conclusions of the study are anecdotal, but they are important b/c they add further direct support to a mountain of diverse evidence suggesting #COVIDisAirborne, though not treated so by #WHO and others.

RT original from @CPita3:
3/ One key, practical take-away: upgrade your #mask quality (#N95, when possible) and always make sure it fits snugly all around to reduce air/virus leakage & transmission risk.
Read 6 tweets
Sehr geehrter @hubertus_heil, @BMAS_Bund, Frau Kanzlerin Merkel,

Wir, meine Lebenspartnerin und ich hatten heute dieses Schreiben in unserem Briefkasten und sind, ich kann es nicht anders beschreiben, begeistert [Thread]
Durch die #BPK vom 21.1 erfuhr ich durch die, immer wieder, naiven Fragen von @TiloJung das ihr Ministerium „angefangen hat zu diskutieren“, die nun verpflichtenden #FFP2- oder #N95-Masken auch für Geringverdiener zugänglich zu machen.
2 Tage, also +/-48 Std dieses Ergebnis der angefangen Diskussion im Briefkasten zu haben ist mehr als nur vorbildlich aller Beteiligten, die dazu beigetragen haben, egal wie groß oder klein der Anteil daran gewesen sein mag. Warum? Well, that’s simple
Read 12 tweets
Tesco, Asda and Waitrose join competitors to ban maskless customers from stores
- Five of the UK’s biggest supermarkets have now banned shoppers who refuse to wear face harmful #masks.…
Comprehensive analysis of 50 states shows greater spread with #mask mandates
- Masks are “sterilized” with Ethylene Oxide - a known carcinogen'
- The IARC classifies ethylene oxide into group 1, meaning it is a proven carcinogen.… ImageImageImageImage
1. Florida with no statewide mask mandate after the state said counties could no longer enforce mask mandates.
2. California’s had mask mandates for 6-8 months and it hasn’t mattered. - The people 'getting together thing' is disproven nonsense.… ImageImage
Read 37 tweets
Zur #FFP2 #Maskenpflicht in #Bayern: Es gibt mehrere Möglichkeiten, #FFP2 oder #N95 Masken mehrfach zu verwenden!
Wie, ist im folgenden Thread beschrieben und im Link zu einer Studie auch nachzulesen.
Bitte um Reichweite @ennolenze @AscotBlack @ChristianFuchs_ @fvckcorona1 1/
1. Möglichkeit: Masken rotieren
Insgesamt nimmt man sich vier Masken und markiert diese mit den Zahlen 1-4. Man wechselt dann jeden Tag die Maske. An Tag 5 wird wieder die Maske mit Nummer 1 genommen, usw. Theoretisch auch mit 8 Masken machbar, wenn öfter am Tag benötigt. 2/
Wichtig dabei: Masken bei Raumtemperatur und ca. 40% Luftfeuchtigkeit zum Trocknen aufhängen. Laut Studie KEINE Veränderung der schützenden Eigenschaften der Maske. 3/
Read 11 tweets
#PresidentialDebates should not happen without #LiveFactChecking, especially when our #despot is infamous for lies! This is a thread which attempts to dispute some of #TheHateYam's lies. The #SecondPresidentialDebate2020 begins at 24:19 on this video.
At 28:00 #PresidentDeathBreath congratulates himself on what he's done in terms of #PPE. All he did was loot the #FederalStockpile they sold it at auction abroad for #TrumpCrimeSyndicate profit, then #Kushner said it was their own not #ThePeoplesStockpile!…
Then he replaced the quality, American made #PPE stolen from #ThePeoplesStockpile w/substandard mice chewed expired crap he bought from #Putin, he allowed #Putin to fly it into #Boston on fighter jet! #Russian fighter jets do not belong in our airspace!…
Read 21 tweets
During a pandemic there can be glimmers of light. I am proud to announce that we have brought production of #N95 masks (beginning to end) to #NC. THREAD…
The #MadeinNC collaboration will produce nearly 2 million N95 respirators per year to fill the unmet need for #NC frontline health providers during #COVID19.
Since the onset of #COVID19, demand for N95 respirators and other PPE has outpaced current global manufacturing capabilities. N95s are still scarce and many health organizations confront the issue of counterfeits and price gauging, among other obstacles.
Read 8 tweets
Ahem, updated statement from the CDC! This is a definite upgrade in their advice on the role of #aerosol spread of #COVID19. I wonder what the Australian Infection Control Expert Group have to say on this?
#covid19aus #Masks #PPE #n95… Image
The page was last updated on sep 18, although i'm not sure when this specific update re: aerosol was made. Although it's in bold, makes me think it was very recent!
Read 3 tweets
Question 1. Ratio of transmission in aerosol transmission for previous viruses and short range. Airborne flu throughout the facility in healthcare. @famfightflu #EnviroHealthMatters #WearAMask
Experts reject faceshield since they do not block aerosols. #WearAMask
Question 2: Where does the viral particle go? Deep into the lungs. It turns off the immune system in the lungs. @CarlosdelRio7 @KrutikaKuppalli #WearAMask #EnviroHealthMatters #n95
Read 3 tweets
L'inventore della #maschera #N95 #ffp2 che protegge sia chi la indossa che le altre persone contro #Covid19, ha scritto quest’ottimo lavoro sul riutilizzo.

Due dei metodi consigliati:
➡️70 gradi / 60min nel forno
➡️4 maschere a rotazione, 1 al un giorno…
Germania: „Più di 1000 nuovi positivi #coronavirus al giorno per 3 giorni consecutivi.

Proprio quando ciò è successo per la prima volta in 🇩🇪, tra il 15 e il 17 marzo, abbiamo CHIUSO tutte le scuole. Ora è accaduto di nuovo e noi stiamo per RIAPRIRE tutte le scuole.“ 👇
Read 3 tweets

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