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Yale, Stanford, Berkeley and IPA were involved in this massive research.
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Masks: A massive randomized study is proof that surgical masks limit coronavirus spread. The preprint paper tracked more than 340k adults across 600 rural Bangladesh villages. This is the largest study on the effectiveness of masks limiting SARSCoV2 spread https://t.co/RGn2YMX49n
— delthia ricks 🔬 (@DelthiaRicks) September 1, 2021
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Study of 340,000 people across 600 villages in Bangladesh finds that masks ARE effective at preventing spread of Covid https://t.co/koFQTj2cT1
— Daily Mail Online (@MailOnline) September 1, 2021
— simonthong aka kitty poo (@KittyPo80176717) September 1, 2021
— simonthong aka kitty poo (@KittyPo80176717) September 1, 2021
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With dozens of researchers at Yale, Stanford, Berkeley and IPA and several other organizations, we ran a cluster randomized trial involving almost 350,000 people and 600 villages in Bangladesh to assess the impact of community masking on COVID.
— Jason Abaluck (@Jabaluck) September 1, 2021
With this 29 percentage point increase in mask-wearing, we saw a 9% drop in serologically confirmed COVID.
— Jason Abaluck (@Jabaluck) September 1, 2021
Since severe morbidity and mortality are concentrated among the elderly, this suggests that community-wide masking can be an extremely effective tool to combat COVID.
— Jason Abaluck (@Jabaluck) September 1, 2021
As noted, we find especially convincing evidence that surgical masks are effective. Cloth masks reduce COVID symptoms, but the effect we find on symptomatic infections (confirmed via blood tests) is driven by surgical masks.
— Jason Abaluck (@Jabaluck) September 1, 2021
A longer discussion of our intervention is available here, along with the underlying working paper: https://t.co/atYZ5R27NU
— Jason Abaluck (@Jabaluck) September 1, 2021
In the next few weeks, we'll post a public GitHub package with all of our data and analysis (with identifiers removed).
— Jason Abaluck (@Jabaluck) September 1, 2021
The promised thread on how this fits into the existing literature is here:https://t.co/0fjpk77lpz
— Jason Abaluck (@Jabaluck) September 1, 2021
The promised policy / cost-benefit analysis thread is here:https://t.co/pVZba0CgOU
— Jason Abaluck (@Jabaluck) September 1, 2021
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weehingthong 