Reference no: EM132738153

Choose the correct answer

1. A 48yo male developed high fever, cough, and dyspnea 10 days after helping to dismantle a beaver dam in central Michigan. On examination he has dry crackles in both lungs. Furthermore, he has deep, nodular skin lesions, some of which have erupted on the surface of the skin. Chest radiograph shows bilateral opacities. A sputum smear shows occasional large round yeast cells with broad-based budding. Which systemic fungal infection is most likely?

Candidiasis

a. Cryptococcosis

b. Histoplasmosis

c. Blastomycosis

d. Aspergillosis

2. 28yo male with untreated HIV infection has increasing fever and dry cough for 5 days. He is mildly short of breath. Chest radiograph shows diffuse reticular infiltrates in both lungs. Except for a temperature of 38.8°C and mild thrush on his palate and buccal mucosa, his physical examination is normal. A deep sputum specimen is induced and sent to the lab. Which of the following would most likely be found by microscopic examination of the specimen if Pneumocystis pneumonia were suspected?

a. Yeast cells surrounded by a clear zone on India ink examination

b. Gram-positive budding yeast and pseudohyphae

c. Acid-fast bacilli

d. Silver-stained spherical cysts (about the size of erythrocyte)

3. Which of the following public health measures would have no effect on the incidence of human malaria?

a. Mass treatment of human populations

b. Animal reservoir vaccination

c. Destruction of mosquito breeding habitats

e. Bed nets