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We have resources on dozens of important environmental health topics presented in various forms including Evidence Reviews, Evidence Briefs and Research Scans, Subject Guides, Blogs, Webinar Recordings, and Videos and Tools. Please see this page for more information concerning these document types. Browse the topics and discover what is available.
Do-it-yourself (DIY) air cleaners: Evidence on effectiveness and considerations for safe operation
January 18, 2023
Key Messages A review of academic and technical literature showed that do-it-yourself (DIY) air cleaners performed similarly to commercial portable air cleaners in terms of clean air…
Pandemic experiences with manual ventilation and carbon dioxide (CO2) sensing in schools
October 19, 2022
Key Messages Schools employed a variety of different manual ventilation protocols to increase air exchange in naturally and mechanically ventilated buildings or classrooms during the…
Understanding transmission of SARS-CoV-2 in the ongoing COVID-19 pandemic
December 15, 2021
Introduction The emergence of a novel coronavirus in late 2019, identified as SARS-CoV-2, has resulted in a global pandemic accompanied by an unprecedented public health response. This review of the…
A rapid review of the use of physical barriers in non-clinical settings and COVID-19 transmission
November 17, 2021
Key Messages Epidemiological and experimental evidence suggests that physical barriers may decrease transmission risk. However, challenges in creating clear guidance around barrier design and…
Indoor CO2 sensors for COVID-19 risk mitigation: Current guidance and limitations
May 18, 2021
Primary inquiry: Information was requested regarding whether CO2 monitoring could be implemented as a COVID-19 risk mitigation tool in restaurants. Building on a previous NCCEH document in which we…
Contextualizing the risks of indirect COVID-19 transmission in multi-unit residential buildings
March 24, 2021
Introduction Since the beginning of the COVID-19 pandemic, multi-unit residential buildings (MURBs) have been of particular concern to both public health practitioners and MURB occupants. MURBs are…
COVID-19 risks and precautions for the performing arts
September 23, 2020
Introduction The COVID-19 pandemic has caused major changes to how musicians and performers practise and rehearse and has brought many live performances to a halt. Restrictions have been put in…
COVID-19 risks and precautions for choirs
July 10, 2020
The COVID-19 pandemic has required a rethinking of how many of our daily tasks and routine activities influence risks of transmission of SARS-CoV-2, the virus responsible for the disease. Early in…
Crematoria emissions and air quality impacts
March 24, 2020
Primary inquiry A municipality received an application from a funeral home to install a cremator within their facility. Objections were received from nearby residents who were concerned about…
Public health planning for wildfire smoke
August 21, 2019
Population level wildfire smoke exposure is complex. It is difficult to measure and prevent. Reducing the adverse physical and mental health effects related to smoke exposure requires insight into…