A nurse is teaching a client who has tuberculosis about infection control with her family at home. Which of the following instructions should the nurse include?

Rationale: A. "Make sure family members wear masks whenever they are in the same room as you." Masks are mainly recommended for the client with tuberculosis, not family members unless they are at high risk. The focus should be on good hygiene and cough etiquette. B. "Return to work after two consecutive sputum cultures are negative." While negative sputum cultures are important, returning to work depends on completing the full treatment regimen and clinical improvement. Full treatment is essential for transmission control. C. "Before coughing or sneezing, cover your mouth and nose with a tissue." This is the correct advice to prevent the spread of tuberculosis. Covering the mouth and nose with a tissue when coughing or sneezing helps contain respiratory droplets and protect others. D. "Wear a high-filtration mask at home when family members are nearby." Wearing a high-filtration mask is generally necessary for healthcare settings. At home, focus should be on cough etiquette, good ventilation, and completing prescribed treatment.