CBIC Retired Practice Questions with correct answers

B. baseline testing and repeat TST/PPD skin test in 12 weeks after exposure An incubation period of 2 to 12 weeks is usually necessary after exposure to the TB bacteria inorder for the PPD test to be positive - Answer A patient who is HIV-infected was admitted to the hospital with a diagnosis of pneumonia. Four days following admission, the patient is placed in airborne precautions for active pulmonary tuberculosis (TB). Culture and sensitivity testing of sputa indicates Mycobacterium tuberculosis resistant to Isoniazid. Potentially exposed employees should be offered which of the following: A. pyrazinamide (PZA) and rifampin for 6 months B. baseline testing and repeat TST/PPD skin test in 12 weeks after exposure C. chest x-ray in 6 months D. two-step TST/PPD skin testing per hospital protocol A. case control Case control is designed to help determine if an exposure is associated with an outcome - in this case a BSI - Answer Which of the following studies should be completed if an outbreak of bloodstream infections have occurred in an ICU? A. case control