The home health nurse is caring for a client diagnosed with HIV infection. Which data suggests the need for prophylaxis with trimethoprim sulfa (Bactrim)? 1. The client has a positive HIV viral load....

The home health nurse is caring for a client diagnosed with HIV infection. Which data suggests the need for prophylaxis with trimethoprim sulfa (Bactrim)?

1. The client has a positive HIV viral load.

2. The client’s white blood cell count is 5000/mm3.

3. The client has a hacking cough and dyspnea.

4. The client’s CD4 count is less than 300/mm3.