Masks work? YES. This is appalling. Atlas offers no explanation for the increasing mountain of evidence in support, and instead offers only a bizarre and incoherent paper. I don't know why the administration wants to die on this hill.
https://twitter.com/SWAtlasHoover/status/1317465173347700740
So, once again, what is the evidence?
In my May article on the regimen hospitals have used to stop spread of COVID19 (hygiene, distancing, masks, and testing at least symptomatic people), I review the copious evidence to then on why masks work. newyorker.com/science/medica…
In my May article on the regimen hospitals have used to stop spread of COVID19 (hygiene, distancing, masks, and testing at least symptomatic people), I review the copious evidence to then on why masks work. newyorker.com/science/medica…
Since that article, numerous corroborating studies have come out. This comprehensive review lays out the strong laboratory evidence of the ability of surgical masks and cloth masks to prevent transmission. europepmc.org/article/PPR/PP…
This real world report found that before a mandatory mask regimen at @MassGenBrigham, COVID19 cases were increasing exponentially among health care workers, and after they decreased steadily. jamanetwork.com/journals/jama/…
This study of coronavirus deaths across 198 countries found that countries with higher rates of mask-wearing had lower death rates. medrxiv.org/content/10.110…
This @Health_Affairs paper examining COVID19 rates before and after mask mandates in 15 states + DC found the mandates slowed the daily COVID19 growth rate exponentially. >200,000 lives estimated saved. healthaffairs.org/doi/10.1377/hl…
These are the results from Arizona's experience after it's mask requirement and limitation of indoor crowding cdc.gov/mmwr/volumes/6…
Famously, two infected hairstylists in Springfield, MO, exposed 140 clients in prolonged close contact with them. But masks were used by all and contact tracing and testing turned up zero infections. washingtonpost.com/business/2020/…
And there are other cases like this, such as this one with a man on a flight who had a cough and subsequently tested positive, but wore a mask and infected no one. cmaj.ca/content/192/15…
Masks aren't perfect. They markedly reduce transmission and real but limited protection to wearers. Wearers are nonetheless at risk from non-wearers, inconsistent use, and going to indoor bars and restaurants where all remove the mask to eat.
https://twitter.com/michaelmina_lab/status/1317611078323503105?s=20
So the fact that mask wearers can still get infected doesn't mean they aren't protective, let alone are causing spread of infection. nbcnews.com/health/health-…
Again, again, again, the evidence for masks is overwhelming. Atlas is spreading false information and is either shockingly unknowledgeable about public health basics or deliberately misleading the public.
https://twitter.com/SWAtlasHoover/status/1317465173347700740?s=20
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