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The NCCEH has assembled a directory of scenarios on various environmental health topics intended to sharpen the problem-solving skills of practitioners and students. We welcome your use of our feedback form to share new questions and scenarios.
Trigger for Investigation On June 18, 2010 a commercial harvester advised an inspection specialist at CFIA of four cases of suspect PSP-related illness that occurred June 17, 2010. CFIA began an investigation and trace-back and advised relevant public health authorities of illnesses to ensure follow-up of cases. You are the epidemiologist working at the local health authority where the cases...View Full Article
In 2011, three high-definition outdoor LED video billboards were erected around a city sports stadium. The residents of the surrounding community are exposed to the lighted images of these screens when they are illuminated. A representative of a community organization advocating to remove the video screens has asked the Chief Medical Health Officer of the local health department whether the...View Full Article
A Public Health Inspector (PHI) has raised a concern about a local middle school with a small, poorly ventilated computer room containing computers over 10 years old. The PHI has read that brominated flame retardants used in computers can affect reproductive health and is concerned about many students and teachers who spend 20-50% of their school week in this room. What is the issue?What are...View Full Article
Pepper Spray in the Indoor Environment and in the Vicinity of Food Products and Preparation Surfaces
Pepper spray is discharged during an attempted robbery of a jewellery store in a large urban mall. The robbery site is located next to the mall’s food court. For several days, mall patrons continue to report uncomfortable symptoms (e.g., burning sensation in their eyes and throat) when they enter the food court. Public Health Inspectors (PHIs) are asked to respond to concerns about...View Full Article
A Public Health Inspector calls about an issue flagged at an older elementary school. As part of a teacher complaint process, the provincial health and safety agency has been conducting a workplace investigation. Carbon dioxide (CO2) levels were measured and ranged from 412 ppm in an unoccupied classroom to 1,130 ppm in the school library and 1,660 ppm in an occupied classroom that had closed...View Full Article