A nurse is caring for a client who has pneumonia caused by Haemophilus influenzae type B. Which of the following types of isolation precautions should the nurse implement?

Rationale: A. Protective environment: Protective environment precautions are used for clients with compromised immune systems (e.g., transplant patients), not for those with bacterial pneumonia caused by Haemophilus influenzae type B. B. Droplet: Haemophilus influenzae type B is spread through respiratory droplets, so droplet precautions are appropriate. The nurse should wear a mask when within 3 feet of the client to prevent transmission. C. Airborne: Airborne precautions are used for diseases transmitted through small particles in the air, such as tuberculosis or measles, but are not necessary for Haemophilus influenzae type B, which is droplet-transmitted. D. Contact: Contact precautions are used for infections spread by direct or indirect contact with the patient or their environment, such as Clostridium difficile or MRSA, but not for Haemophilus influenzae type B pneumonia.