In your own words explain what the 2 step TST is and why it is used? This is NOT a description of the TB test itself. It is the use of the TWO step test, which is not simply a description of the procedure.
2. In your own words explain the diagnostic tests used for influenza and why they are important (in addition to knowing what the patient has)?
3. “How does smoking affect my lungs? Why does it increase my risk of developing COPD?”