OSH Answers Fact Sheets

What are concussions? A concussion is a traumatic brain injury caused when the brain is shaken in the skull. A blow to the head, a blow to another part of the body that jolts the head, or any forceful movement of the brain can result in a concussion. Concussions can be challenging to detect because they are not typically visible on routine diagnostic imaging, such as X-rays, Magnetic Resonance Imaging (MRI), or Computed Tomography (CT) scans.   What are some hazards that can cause a...

What is Lyme disease? Lyme disease is an illness caused by bacteria called Borrelia burgdorferi . This bacterium is carried by certain ticks and spreads to the host when the tick bites. The bacterium is normally found in small animals, such as mice, squirrels, chipmunks, shrews, etc. Lyme disease in humans can have a range of effects from rashes and flu-like symptoms to more serious symptoms, including arthritic, cardiac, and neurological effects. It can often be effectively treated, especially...

Is outdoor air quality an occupational concern?  Outdoor air quality can be an occupational concern, especially during poor air quality events. Employers have a duty to protect workers from hazards in the workplace, including environmental hazards, such as outdoor air quality.   What impacts outdoor air quality in Canada?  Outdoor air pollution comes from both human activity and natural sources. Natural sources contributing to air pollution include dust storms, wildland fires,...

Why is it important to measure and control heat stress exposures? Measuring heat stress exposure and implementing control measures helps reduce the risk of heat-related injuries or illnesses. To choose the most effective control measures, workplaces should first assess the specific job conditions, including radiant heat sources, air temperature, humidity, and other factors. Then, general and job-specific control measures should be implemented, depending on the results.  Measurement...