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& #39;s been decreased O2 concentrations in pregnant women" yeah, well here& #39;s the reference from one of his publications, dissected in fine form by  @caruzycki /2 https://twitter.com/caruzycki/status/1380711275307540481?s=20">https://twitter.com/caruzycki...
                        
                            
                            
                            
                        
                        
                        
                        
                                                
                    
                    
                                    
                    
                        
                        
                        Here& #39;s an example of Prof Conly& #39;s influence by the dedicated  @jmcrookston /3 https://twitter.com/jmcrookston/status/1316441457675431936?s=20">https://twitter.com/jmcrookst...
                        
                            
                            
                            
                        
                        
                        
                        
                                                
                    
                    
                                    
                    
                        
                        
                        What would a dermatologist prefer, acne or COVID-19? Let& #39;s find out! /4 https://twitter.com/lisa_iannattone/status/1380596564910047240?s=20">https://twitter.com/lisa_iann...
                        
                            
                            
                            
                        
                        
                        
                        
                                                
                    
                    
                                    
                    
                        
                        
                        Because of Prof. Conly& #39;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& #39;s egregious. /6
                    
                                    
                    Droplet & Contact precautions, and conserve PPE.
Conserve PPE, despite ample supplies. One year into the pandemic. It& #39;s egregious. /6
                        
                        
                        Here& #39;s what the CDC and NIOSH have to say about the differences between Surgical Masks and N95 Respirators. /7
(image adapted from https://www.cdc.gov/niosh/npptl/pdfs/UnderstandDifferenceInfographic-508.pdf)">https://www.cdc.gov/niosh/npp...
                    
                                    
                    (image adapted from https://www.cdc.gov/niosh/npptl/pdfs/UnderstandDifferenceInfographic-508.pdf)">https://www.cdc.gov/niosh/npp...
                        
                        
                        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 https://ucalgary.yuja.com/V/Video?v=332352&node=1205653&a=385475807&autoplay=1">https://ucalgary.yuja.com/V/Video...
                        
                                                
                            
                                
                                
                                
                            
                            
                        
                        
                        
                        
                                                
                    
                    
                
                 
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