Topic Pages
Our topic pages introduce the reader to important and emerging environmental public health issues through a curated list of NCCEH and external resources. The most relevant resources have been selected to best guide the search for further information. Topic pages are reviewed and updated with new content periodically. These lists are not intended to be exhaustive, and the omission of any individual resource does not preclude it from having value.
Legionella is naturally occurring waterborne bacteria that can survive within building water systems and multiply under ideal conditions that include warm temperature (e.g., 25-45°C), lack of…
The transmission of SARS-CoV-2, the virus that causes COVID-19, occurs primarily via direct contact with or respiratory droplets from an infected person. However, there is evidence to suggest that…
Radon gas is a colourless, odourless, radioactive gas that is released during the decay of uranium in rocks and soils. Radon levels outdoors are generally low, but radon gas indoors poses more of a…
The frequency and intensity of Canadian wildfires is increasing due to the changing global climate, as well as long-standing forest management practices. Ever-worsening fire seasons impact…
A health impact assessment (HIA) is a process that strategically evaluates the potential effect on health of a policy, plan or project. The assessment generally takes place in a series of steps, each…
[Last Updated: Feb 11, 2021]
During the ongoing COVID-19 pandemic, it may be necessary to periodically close public buildings and facilities, followed by re-opening when safe again. Periods of low…
Indigenous communities may be disproportionately impacted by a variety of emergencies and disasters, including floods, wildfires, and crude oil spills in their traditional territories. This may be…
Cyanobacteria, commonly known as blue-green algae, are naturally occurring microscopic organisms found in fresh, brackish, or marine water that can release cyanotoxins into freshwater systems. These…
Norovirus is a group of highly contagious viruses that cause short-term gastroenteritis symptoms including nausea, vomiting, diarrhoea, and potentially chills and fever. Norovirus infection can occur…
Radiofrequency (RF) radiation are electromagnetic waves emitted from a variety of common wireless communication devices, including cell phones, cordless (DECT) phones, Wi-Fi computer networks, smart…