Thanks for your question on HCM. I can understand your situation and problem. Pulmonary tuberculosis is infectious disease. It spread through droplets. TThese droplets are produced by patient during coughing, sneezing, laughing, talking, yawning etc. By these acts, patient discharge droplets in the environment and through inhalation they will infect near by normal individuals. So chances of infection will be high in your case. Your immune system is also weak, so this will further increase the possibility of infection. My advice is to avoid hospital visit and still if you really want to go then wear protective mask before entering hospital premises. Use antiseptic solution after visiting hospital. Also insist patient to wear mask. These are the possible ways to decrease the infectivity.