Thread by @DavidElfstrom

LISTEN as highly influential Prof John Conly (upper left) of UCalgary, AHS CV19 sci advisory grp, Public Health Agency Canada, Chair WHO Infection Prevention & Control R&D Expert Grp. opposes N95 wearing citing acne harm vs @DFisman & @kprather88 precautionary principle. /1

"there's been decreased O2 concentrations in pregnant women" yeah, well here's the reference from one of his publications, dissected in fine form by @caruzycki /2

Here's an example of Prof Conly's influence by the dedicated @jmcrookston /3

What would a dermatologist prefer, acne or COVID-19? Let's find out! /4

Because of Prof. Conly's influence, public health agencies around the world continue to double down on contact and droplet. Public Health Ontario: /5

February 19, 2021 Directive 5 FAQ from Ontario Ministry of Health & LTC:

Droplet & Contact precautions, and conserve PPE.

Conserve PPE, despite ample supplies. One year into the pandemic. It's egregious. /6

Here's what the CDC and NIOSH have to say about the differences between Surgical Masks and N95 Respirators. /7
(image adapted from ) cdc.gov/niosh/npptl/pd…

The presentations by Prather and Fisman make an excellent summary of how the wide variance in respiratory aerosols produced by people can explain the high dispersion factor of COVID-19. Highly recommended to view the 60 minute session in its entirety /8 ucalgary.yuja.com/V/Video?v=3323…

Dr. Conly is the primary & corresponding author of WHO commentary article stating "SARS-CoV-2 not airborne to any significant extent, respirators offer no advantage & may result in unintended harms" same as he said in the video above /9 aricjournal.biomedcentral.com/articles/10.11…

Regarding the poor experimental design leading Conly to claim N95 leads to "decreased O2 concentrations in pregnant women", thread is archived here:

OF COURSE you can't get much air when you're breathing through such a restricted contraption. /10