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2022: the Year of the N95 respirator

2022: the Year of the N95 respirator

In 2020 and 2021 we wore masks. In 2022 we will be wearing respirators. Whether they're official NIOSH N95s, CAN95, or KN95 , for the purpose of general public use we can just call them "N95s". The need for N95s has been clear from the beginning of the pandemic, but for two years most of […]

COVID-19 Resources

COVID-19 Resources

[Dec 23, 2021; will be updated] This page is for general information on tools to help us fight COVID. I'll focus primarily on respirators and air quality here and less on vaccines: Masks and Respirators section Air Quality Measurement (CO2, etc.) section HEPA Filtering section Here's the summary: N95s disposable respirators are more comfortable and […]

Masking Exemptions at York University

Masking Exemptions at York University

[updated Dec 9, 2021] Masks are a form of personal protective equipment that can be very effective at spreading COVID. In your classroom you should only see masked students and they should all be wearing high quality models that protects all of us from the airborne hazard known as COVID. Here's why. Student Accessibility Services […]

COVID Questions for YorkU

COVID Questions for YorkU

October 31, 2021 (Updated Nov. 5, 2021) [Update Nov 5, 2021] In response to my questions I have received a letter from the Provost of the University, Prof. Lisa Philipps. Only the academic freedom question was addressed. The administration of York University has announced a return to face-to-face teaching in January 2021, with changes in […]

Flying Blind into January: Update on YorkU Air Quality [Oct 2021]

Flying Blind into January: Update on YorkU Air Quality [Oct 2021]

It's Oct 8, 2021. Last week I heard from my Vice Dean of the plan to go back to in-person teaching in January, 2022.[1] I believe that this is potentially a premature decision as York University appears to have ignored deficiencies in its measures to fight COVID. These include a vaccination documentation system that may […]

Update on Ventilation at YorkU (Aug. 17, 2021)

Update on Ventilation at YorkU (Aug. 17, 2021)

Introduction COVID has changed everything about campus life. In order to maximize the safety of students, staff and faculty at York University, we, as a community, need to focus on multiple factors, including: Vaccinations Ventilation (and air filtering) Masking Progressive work / study policies Last week, our university partially caved to pressure from the YorkU […]

Fighting COVID with Ventilation

Fighting COVID with Ventilation

Introduction It's May, 14, 2021 and the consensus is that COVID is airborne, that the characteristics of aerosols play a significant role in how it spreads and infects.  This is distinct from the outdated assumption that it is spread primarily through droplets and/or surface contact (foamites). Summary: Add CO2 Sensors to our Classrooms & Offices […]