A nurse in a provider's office is collecting data from a client who was just diagnosed with tuberculosis. Which of the following actions should the nurse take first?

A. "Communicate with personnel about the need for prophylaxis" is incorrect. While it is important to consider prophylaxis for those who may have been exposed to tuberculosis, the first priority is to minimize the risk of transmission from the client to others. B. "Place a mask on the client" is correct. Placing a mask on the client is the first step in preventing the spread of tuberculosis. This helps contain respiratory droplets that could transmit the bacteria to others. C. "Contact those who live with the client" is incorrect. While it is important to contact close contacts to assess their risk, this action comes after implementing infection control measures, such as placing a mask on the client. D. "Notify the local health department" is incorrect. While the health department must be notified about a tuberculosis diagnosis, the immediate priority is to protect others from exposure by masking the client and using appropriate isolation precautions.