Biosafety refers to the practices and precautions taken to prevent harmful biological agents—like viruses, bacteria, or toxins—from accidentally harming people, animals, or the environment. Think of it as a set of rules and tools scientists use to stay safe while working with dangerous germs. To organize these safety measures, experts created biosafety levels (BSL), which range from 1 to 4. Each level represents stricter controls based on how risky the biological material is.
For example, BSL-1 is for low-risk microbes, like basic lab bacteria, requiring simple hygiene and gloves. BSL-2 steps up for moderate risks (like flu…
