It is important for workers to take precautions to prevent transmission of methicillin-resistant Staphylococcus aureus (MRSA), which occurs primarily in healthcare settings. MRSA is shed in blood, pus, and debris from MRSA-infected wounds. It can also colonize the nasal cavity. As a healthcare worker, you might be involved in direct patient care, or you might be serving patients another way in a clinic or office. Consider what you would do if one of your patients is diagnosed with MRSA. Questions: 1. Use what you have learned in this chapter to construct a possible chain of infection for this MRSA. 2. What do you think is the weakest link in the MRSA chain of infection? That is, explain what you think is the most effective way to prevent MRSA.