Problem 1
Postpartum fever due to Mycoplasma hominis is treated with: A. tetracycline. B. erythromycin. C. penicillin G. D. a second-generation cephalosporin.
Problem 2
A distinguishing feature of human Mycoplasma species is that they: A. stain well with Giemsa but not by Gram stain. B. contain no bacterial peptidoglycan. C. are not immunogenic because they mimic host cell membrane components. D. cannot be cultivated in vitro. E. are dependent on host sources of adenosine triphosphate.
Problem 3
Which of the following is most characteristic of Mycoplasma pneumoniae infection? A. Infection results in a fever of sudden onset accompanied by a productive cough. B. Infection most commonly occurs in the upper respiratory tract. C. Infection is definitively diagnosed by direct microscopic examination of sputum. D. Reinfection is rare and less severe than primary infection. E. Infection causes extensive scarring and calcification of affected lung tissue.
Problem 4
A 30 -year-old woman complained of unrelenting headache, accompanied by fever, chills, and malaise. After 2 to 4 days, a dry cough developed. Chest X-rays reveal a patchy, diffuse bronchopneumonia involving both lobes. Her white cell count was normal. Which of the following is the most likely diagnosis? A. Legionellosis B. Infection with parainfluenza virus C. Infection with Streptococcus pneumoniae D. Infection with Haemophilus influenzae E. Infection with Mycoplasma pneumoniae
