Biological hazards are organic substances that pose a threat to the health of living organisms, primarily humans. They are disease-producing agents, also known as pathogens, that can be transmitted to individuals through various routes of exposure. Exposure to these hazards may result in acute or chronic health conditions. Examples of biological hazards include bacteria, viruses, parasites, and fungi. These hazards can cause harm to human health, and exposure can lead to sudden and long-term health issues, and sometimes life-threatening diseases. Biological hazards are widely found in the natural environment and are present in many work sectors and industries. Some sectors are at a higher risk of exposure to biological hazards, such as healthcare, veterinary services, agriculture, sewage management, and laboratories.