ASHRAE – First-Ever Building Pathogen Mitigation Standard – May 23

“The entire world was touched by the effects of the pandemic and we learned that an effective way to protect ourselves from the spread of pathogens is to improve the indoor air quality and ventilation in the buildings that we occupy,” (press release from ASHRAE – The American Society of Heating, Refrigerating and Air-Conditioning Engineers) …

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CDC – Building Ventilation Target to Prevent COVID-19 Spread – May 23

Link to CDC Recommendations Detail at https://johnsnowproject.org/primers/new-cdc-standards-of-air-hygiene/ Interpretation Dr Richard Corsi – “It’s a good start and should decrease inhalation dose of respiratory aerosol concentrations by between about 20% to 40% in many classrooms (based on my experience w/ typical starting points in schools –some w/ recirculation through MERV-13 filters already achieve 5 eACH).” “Importantly, …

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Higher Classroom Ventilation Reduces Illness Related Absences in Elementary Schools – Apr 23

Accross 144 classrooms in 31 schools air measurements reveal that, even with mechanical ventilation in place, improved airflow reduces illness related absences (IRA). “The annual illness-related absence rate at the classroom level was extracted from the student-level absence data and regressed on measured indoor environmental parameters. Significant associations were found. Every 1 L/s per person …

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Non-pharmaceutical Interventions Virtually Eliminate Seasonal Increase in Paediatric Medical Deaths in 2021 USA Winter – Apr 23

A research paper concludes that non-pharmaceutical mitigations were so effective that “In that winter of 2021, the usual seasonal increase in medical causes of childhood mortality was effectively eliminated.” The authors explain that “During the first year of the COVID-19 pandemic, mitigation policies and behaviors were widespread, and although vaccinations and effective treatments were not …

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Hospital Acquired COVID-19 Poses a Serious Risk to New Zealanders – Apr 23

Figures from the state of Victoria, Australia indicate that Hospital Acquired COVID-19 is frequent and may be up to 100 times more lethal.  Hospital-acquired infections pose a serious challenge to healthcare professionals globally, impacting the quality of life of patients, as well as resulting in extra expenditure to our health system.  It has been shown …

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