I’m seeing people modeling length of lockdown time needed in the US using Wuhan parameters. What we’re doing isn’t anywhere near Wuhan did. Even the best we’re doing doesn’t resemble Wuhan. There are categories of action that were done in Wuhan that we haven’t even discussed.
-
-
I risked a lot to publish that mask oped weeks ago—against CDC and WHO guidance. Wished someone else would. Been called everything under the sun. But the scientific community is rallying around masks.
But please, please, give the CDC/WHO space to shift.
https://twitter.com/JGLeBozec/status/1244602907854540801 …This Tweet is unavailable.Show this thread -
Many more countries are sensibly adopting masks for everyday use.https://twitter.com/johnmcclean_ie/status/1244639747508785153 …
Show this thread -
My mask plan is homemade cotton or paper towel/tissue or procedure masks UV-C sanitized for re-use. Plan for trimming my bangs isn’t so advanced, send help.
#Masks4Allpic.twitter.com/34948v1JhW
Show this thread -
How is this happening? Is this true? Why aren’t masks rationed? “Roughly 280 million masks from warehouses around the U.S. had been purchased by foreign buyers and were earmarked to leave the country, according to the broker — and that was in one day.” Https://twitter.com/geoffreygertz/status/1244754128766734336 …https://twitter.com/geoffreygertz/status/1244754128766734336 …
Show this thread -
This may be happening! YES! Finally!


https://twitter.com/scottgottliebmd/status/1244793474114871298 …Show this thread -
More and more countries are accepting the overwhelming evidence and science that we clearly need universal mask wearing to combat a respiratory infection with asymptomatic spread. The sooner the better: first home-made, then ramped up domestic production.https://twitter.com/alanwongw/status/1244945031867166721 …
Show this thread -
Just adding this here. Also reminder that a peer-reviewed publication looking at what worked for SARS, same family as COVID, found that *masks* were the most effective intervention—better than hand-washing. Keep washing hands and distance though! Need all!https://twitter.com/jeremyphoward/status/1242894386469486592 …
Show this thread -
We should've ramped up national production in January, distributing N95s to hospitals and surgical masks to people like Taiwan did. Only three *total* deaths in Taiwan as of today, despite extensive travel to China before. But here we are. Let's start now.https://twitter.com/ryanstruyk/status/1244990603525570560 …
Show this thread -
Yes, I've been trying to make that point for weeks. Distributing some masks now: fewer intubations in three weeks. Each intubation has massive need for PPE compared to that mask. The trick is managing the transition without depriving medical workers now.https://twitter.com/litwicki/status/1245038781700272128 …
Show this thread -
On the one hand, thank you. On the other hand, it was a hard piece to write, personally (a lot of risk). On the other other hand, the science was clear and media should challenge authorities when/if the science/facts warrant it. Otherwise what's the point?https://twitter.com/juicemoorthy/status/1245043144678244352 …
Show this thread -
In the digital age, neither journalists nor pundits need to spend too much time merely repeating what the authorities say, but rather also evaluating it in a credible and fact and science based manner. No science/facts=crank. No evaluation=irrelevant.https://twitter.com/thefactualnews/status/1245038735340621824 …
Show this thread -
See this screenshot of Taiwan's action on masks (link has list of all its actions). Taiwan had extensive ties/travel with China but it has a total of five COVID-19 deaths and only a few hundred cases. Its schools have been open for more than a month. https://cdn.jamanetwork.com/ama/content_public/journal/jama/0/jvp200035supp1_prod.pdf …pic.twitter.com/F1WKuUgumG
Show this thread -
(Apparently link broken so here it is again, a list of actions Taiwan took to contain the epidemic. https://cdn.jamanetwork.com/ama/content_public/journal/jama/0/jvp200035supp1_prod.pdf?Expires=2147483647&Signature=bIZCLS7ZLWTJd~U~H40JgiEGdFb3ggVUJpBvJ7KdANK7HgK1zaj4uWHvqweGym1nWfO~nXt9Y5i1vX79pF7zjjqfzmJAy3udTdpVVZQe07xnQIPcBMXLwZ5XjgTO8yKFXVIpxsXhrmOu8sGSpKiEmQ86ZCKfOTar7fMAGmUCtjiYVFwf31K3REWAA-r3hZyoZpqz3QKpVgpsRpF9fV9thQCq0~yvbvRKTH4PcoB~CZgmXH7rpVb6bILXQn5zBCphf6pyLAa4zIebUEKfCdCYdSdi9LeIEUsesqsYpNWgHJcr4K1LC0hFlst0RHQz-vZ7I-OvrX~5jel6zjjtuDQzjQ__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA … )
Show this thread -
Health care workers! Please consider signing this petition asking for CDC and the WHO to give clear, evidence-based guidance on masks. Every person who's not infected is one less patient you have to care for during this time. Folks, feel free to share. https://www.medwiser.org/sign-petition-international-physicians-and-health-care-workers-call-on-who-and-cdc-to-reserve-ppe-for-frontline-medical-teams-and-recommend-nonmedical-fabric-face-masks-be-worn-by-public/ …pic.twitter.com/iMPAGmUkOQ
Show this thread -
These articles aren’t even attempting to be coherent anymore. There is no known evidence of harm. It’s a lot of weird speculation—all of which flies in the face of all the overwhelming scientific evidence we have.https://twitter.com/rtenews/status/1245793379834908672 …
Show this thread -
But the world is moving. Time for WHO and the CDC to catch up to making evidence-based recommendation for face masks. People need guidance on sanitization/reuse for cloth, and we need rationed distribution once we have surgical mask production catch up.https://twitter.com/nycmayor/status/1245855631241707522 …
Show this thread -
-
I had people tell me that my insistence on continuing to point out the overwhelming scientific evidence in favor of universal mask wearing was about my “anxiety”. In reality, I have the privilege of staying home. Many don’t. This was always about them.https://twitter.com/loisbeckett/status/1245907755057033216 …
Show this thread -
Yep. Totally okay for ordinary people to think CDC/WHO got this right. They normally do! But if you needed to separate the good science journalist from the one that parrots official advice without analytic thinking/deep digging themselves... Litmus moment!https://twitter.com/enscand/status/1246143381526302721 …
Show this thread -
Yes! Finally! One thing left: CDC should issue guidelines for best practices for home-made masks and their re-use and sanitization, and consider distributing/rationing a few surgical masks per person in hotspots with instructions for sanitization/reuse.https://twitter.com/Reuters/status/1246149401246076934 …
Show this thread -
The WHO is also, finally, finally, finally shifting. WHO, like the CDC, should quickly issue guidelines for best practices and sanitization. Time for them to step up and do what they are supposed to do, and can do.https://twitter.com/jeremyphoward/status/1246152974809915393 …
Show this thread -
-
The WHO finally "encourages" the public to wear masks. What a tragic waste of time and a needless squandering of medical authority amidst a pandemic. By March, there was enough evidence of presymptomatic and asymptomatic transmission for me to write this. https://twitter.com/WHO/status/1268927569065324547 …pic.twitter.com/2Me0Sj9OlD
Show this thread -
Also not only is there no evidence for this claim, there is emerging evidence for the opposite, and there is decades of evidence from other safety devices that this concern is not warranted, and if this was a thing, it would also apply to hand-washing.
https://twitter.com/WHO/status/1268927995932225541 …Show this thread -
Here's a preprint of a paper (I'm a co-author) where we review the "false sense of security" claim and explain why it doesn't stand to evidence at all, and why, on the contrary, universal masks would be expected to lessen stigma and heighten solidarity. https://www.preprints.org/manuscript/202004.0203/v2 …pic.twitter.com/2tDzvYGNVr
Show this thread -
If some past person had told me I'd spend most of my energy in the first months of a pandemic arguing against CDC and WHO guidelines, that they would drag their feet despite mounting evidence, and that we'd rely on grassroots movements instead, I'd have dismissed them as nuts.
Show this thread -
I've been arguing for months that the most likely outcome of masks would be INCREASED adherence to distancing—because that's what social science suggests. That baseless "false sense of security" claim had no evidence for it. Now, experimental confirmation.https://twitter.com/Babak_Javid_Lab/status/1269312406120996864 …
Show this thread -
So Dr. Fauci has just said the public was told not to wear masks because they "were in very short supply." I just want to remind everyone what it was like in March—viral threads telling us not to wear masks. (Not picking on one person here—she was misled like everyone else).pic.twitter.com/SEYKHgmYtI
Show this thread -
How we got here: we were told that masks increased wearer's risk compared to no masks—and many experts and media parroted this uncritically despite absolute lack of evidence for this. And I could point to asymptomatic transmission in mid-March because there were already papers.pic.twitter.com/A4URiLQ8Qq
Show this thread -
Don't focus on any one person! This was practically the entire ecology in March with authorities telling us masks were a risk and unnecessary—instead of the truth: shortage—and "experts"/media parroting them uncritically instead of looking at actual research or Asian expertise.
Show this thread - Show replies
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

Dr. Fauci on masks and asymptomatic spread: "There is some rationale we should use [masks] much more." YES. YES! They may shift! I'm begging everyone—especially editors—give them space to change guidance. Take your finger off the clickbait on this.