There is increasing evidence that long-term exposure to fine particulate matter (PM2.5) may adversely impact cognitive performance. Wildfire smoke is one of the largest sources of PM2.5 today and concentrations are likely to increase under climate change. However, little is known about how short-term exposure impacts cognitive function. We aimed to evaluate the associations between daily and hourly exposure to PM2.5 and wildfire smoke and cognitive performance in adults. Scores from 20 plays of an attention-oriented brain-training game were obtained for 10,228 adults in the United States (US). We estimated daily and hourly PM2.5 exposure through a data fusion of observations from multiple monitoring networks. Daily smoke exposure in the western US was obtained from satellite-derived estimates of smoke plume density. We used a longitudinal repeated measures design with linear mixed effects models to test for associations between short-term exposure and attention score. Results were…
The team at NCCEH regularly presents at environmental health events across Canada, in addition to organizing workshops and meetings on various topics. A select listing of our conference presentations and external webinars, as well as presentations from our Environmental Health Seminar Series are available here.
Health Canada published the revised lead drinking water guideline in 2019. The document included recommendations for sampling protocols to assess lead exposure such as random daytime and fixed stagnation time sampling. The selection of a sampling protocol will depend on the objective of the sampling (e.g. typical exposure) and building type (e.g., single-family dwellings, large buildings, schools) and factors such as plumbing configuration and water use/consumption patterns. Indigenous Services Canada conducted a sampling survey in Alberta Region to determine community lead levels in schools and daycares ahead of the guideline changes, to identify potential sources of lead, and to evaluate compliance with the updated guideline.
France Lemieux Head, Materials and Treatment Section Water and Air Quality Bureau, Health Canada
France Lemieux is the Head of the Materials and Treatment Section in Health Canada’s Water and Air Quality Bureau. She holds a Bachelor's degree…
The NCCEH Environmental Health Seminar Series provides an opportunity for learning and knowledge exchange on a variety of environmental health topics. The seminars can be attended in-person or online.
Presenters: Mark McCabe, Fraser Health Authority; Christopher Radziminski and Phillip White, City of Vancouver
Presentation 1: Investigating an Outbreak of Legionnaires’ Disease from Cooling Towers in Surrey, BC
In August 2018, Fraser Health detected an outbreak of Legionnaires’ Disease in Surrey, BC. We employed traditional and novel strategies for identifying and stopping the source, and ultimately, were able to implicate a specific cooling tower as a source of the outbreak. This presentation describes the story of our investigation, the tools and strategies we employed, and key challenges and considerations we faced.
Presentation 2: Driving Down Legionella Risk in the City of Vancouver
This year, Vancouver is implementing mandatory operating…