In Gwladys Caspars' quick guide statement, "don't touch it" refers to biohazards in which Risk Group?

The statement "don't touch it" in Gwladys Caspars' quick guide primarily refers to biohazards found in Risk Group 2. This classification includes pathogens that pose a moderate risk to personnel and the environment. While these agents are not typically transmitted through the air and usually only cause mild disease to humans, they can be infectious and pose a significant threat if proper biosafety practices are not observed.

When individuals work with Risk Group 2 agents, it is essential to take precautions such as not directly touching them to prevent potential exposure and ensure safety. This advice underscores the importance of using personal protective equipment (PPE) and following standard operating procedures when handling materials that might contain these biohazards, emphasizing the need for caution even with moderate-risk agents.

On the other hand, Risk Groups 1, 3, and 4 include agents that are classified as having lower risk or significantly higher risk levels, respectively, and typically involve different safety protocols. Risk Group 1 includes microorganisms that are not associated with disease in healthy adults, while Risk Group 3 and Risk Group 4 pathogens pose much higher risks, requiring more stringent control measures and laboratory practices.