Margery Smelkinson, Ph.D.@MSmelkinsonPhDInfectious diseases scientist with NIAID-NIH.  Leader in @OpenMCPS.  Opinions expressed here are not necessarily those of the NIH, HHS, or the fed gov’t.


The best and biggest study of masks that showed a small effect of surgical masks looks ridiculous when looking at absolute numbers rather than relative risk.  340k people over 2 months, only 20 fewer symp cases in mask arm.

Anish Koka@anish_kokaCardiologist


Appreciate authors of the 🇧🇩 RCT finally releasing raw data.

Dismayed at their topline conclusion on mask effectiveness that generated so much buzz

Out of ~340,000 ppl in mask and control arm.. the difference in symptomatic cases was 20 over 8 weeks.

Revisiting the Bangladesh Mask RCT.

Musings on systems, information, learning, and optimization.