Airborne Transmission Risk and Control

Airborne Transmission Risk and Control

OHCOW has been translating and activating knowledge throughout its history. During COVID-19 this has included gathering evidence and multi-faceted messaging on Airborne Transmission Risk and Control.

Key science summaries and related presentations can be found at Response to Downgrade of PPE Precautions for COVID-19.

Several sessions of our Occ-Covid Webinar Series on the topic have been presented, included:

*New: Doing Something About Ventilation

Slides from this presentation available here.


Related Tools & Resources:

Regional Risk Tool & Tips

Workplace COVID-19 Risk Management (Control Banding) Matrix

Ventilation Checklist

Agricultural Workers and COVID 19 Safety Guidance & Resources


Trusted Sources & External Milestones

*New: February 12, 2021 – Let’s unmask the confusion about masks podcast by Dr. Jennifer McDonald, Ottawa physician and Aerosol Transmission Open Letter author

January 12, 2021 – Public Health Agency of Canada, Guidance on indoor ventilation during the pandemic

January 4, 2021 – Open Letter, Time for government to take aerosol transmission of COVID-19 seriously

December 30, 2020 – Public Health Agency of Canada, Evidence Brief on SARS-CoV-2 Aerosol Transmission.

November 4, 2020 – After months of lobbying Canada’s Public Health Guidelines are finally updated to include Aerosol Transmission and Control, now we need to Recognize, Assess, and Control the risk!

September 28, 2020 – Government of Canada, The Role of Bioaerosols and Indoor Ventilation in COVID-19 Transmission.

July 7, 2020 – Recent summary for the Public Health Agency of Canada acknowledges evidence for aerosol transmission: Evidence Brief on Aerodynamic Analysis and Aerosolization of SARS-CoV-2.
Available on request; Show interest and email for your copy today:


Workplace Health Without Borders webinars hosted by OHCOW Hygienist, Dr. Kevin Hedges, in his role as International President.

COVID-19 Trajectory of a Pandemic, Laurence Svirchev, March 2020

Coronavirus (COVID) Respiratory Protection Resources and Updates on behalf of The International Society for Respiratory Protection (ISRP), Dr. Simon Smith, April 2020.

Respiratory Protection, Tony Havics, May 11 2020

Infectious Disease Control – Infection Control for OSH Professionals, Dr. Thomas Fuller, (US)

Infection Control for Occupational Health and Safety Professionals, Dr. Ajibike Oyewumi, (Nigeria)

Control Banding and COVID-19 Simplifying Risk Communication, Dr. Dave Zalk

Infectious dose can it inform COVID-19 decisions, Dr. Lisa Brosseau, June 2020, (US)

Why Should We Get Serious About Airborne COVID-19 Transmission In Schools? Dr. Lidia Morawska

Risk reduction strategies for re-opening schools, Dr. Joseph Allen, (US)

SARS CoV-2 Transmission and Respiratory Protection, Dr. Raina McIntyre Video & Slides, December 16, 2020

Making the MN Mask, A Team Building Event, Dr. Susan Arnold Video & Slides, December 16, 2020