MICROBIO & ITS APPL Exam 4
Question 1
A nursing student develops a positive reaction to the tuberculin skin test. A history reveals
possible exposure to patients with tuberculosis. A sputum sample is acid-fast negative. When
asked for vaccination records, the student reports that childhood vaccination records were lost
when the family emigrated from a Southeast Asian country. What is the best explanation for
the test results?
The student has been exposed to Mycobacterium tuberculosis.
The student has been infected with Mycobacterium tuberculosis.
The student has been exposed to Mycobacterium tuberculosis or was vaccinated with BCG
vaccine.
The student is not infected.
No conclusion is possible with the information provided.
Question 2
A recently retired man appears at his doctor's office complaining of difficulty breathing, body
aches and fatigue. He is also running a high fever and has a dry cough. He reports having just
returned from a trip to the Middle East where he visited several historical sites. Test results
are negative for a rapid test for influenza A. No bacteria are visible in a microscopic exam of
his sputum. Which of the following is a likely explanation?
pertussis
coronavirus respiratory syndrome
inhalation anthrax
valley fever
primary atypical pneumonia
Question 1
A nursing student develops a positive reaction to the tuberculin skin test. A history reveals
possible exposure to patients with tuberculosis. A sputum sample is acid-fast negative. When
asked for vaccination records, the student reports that childhood vaccination records were lost
when the family emigrated from a Southeast Asian country. What is the best explanation for
the test results?
The student has been exposed to Mycobacterium tuberculosis.
The student has been infected with Mycobacterium tuberculosis.
The student has been exposed to Mycobacterium tuberculosis or was vaccinated with BCG
vaccine.
The student is not infected.
No conclusion is possible with the information provided.
Question 2
A recently retired man appears at his doctor's office complaining of difficulty breathing, body
aches and fatigue. He is also running a high fever and has a dry cough. He reports having just
returned from a trip to the Middle East where he visited several historical sites. Test results
are negative for a rapid test for influenza A. No bacteria are visible in a microscopic exam of
his sputum. Which of the following is a likely explanation?
pertussis
coronavirus respiratory syndrome
inhalation anthrax
valley fever
primary atypical pneumonia
