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Hazards and disasters are terms often used interchangeably in everyday language, but in the context of environmental and occupational health, they have distinct meanings that highlight different aspects of risk and impact. A hazard refers to any potential source of harm or adverse health effect on a person or persons. It is a condition or situation with the potential to cause injury, illness, damage to property, the environment, or a combination of these. Hazards are generally categorized based on their nature: physical (e.g., noise, vibration, radiation), chemical (e.g., toxic substances, flammable materials), biological (e.g., viruses, bacteria, fungi), ergonomic (e.g., repetitive strain, poor workstation design), and psychosocial (e.g., stress, workplace violence). In contrast, a disaster is an actual event or series of events resulting in significant harm to human health, economic loss, or environmental damage. Disasters can be natural, such as earthquakes, floods, hurricanes, and volcanic eruptions, or man-made, such as industrial accidents, chemical spills, nuclear accidents, and occupational incidents that cause mass casualties or large-scale property destruction. A disaster occurs when a hazard is realized and affects vulnerable ______ ___ __________ __________ __________ _______.
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