The organism associated with a disease characterized by the presence of a pseudomembrane in the throat and the production of a potentially lethal exotoxin is (M16-3; Level 3):

An immunocompromised patient from the mid-west became severely anemic.  A bone marrow sample showed macrophages with numerous small oval yeast cells inside.  Lung tissue biopsy also showed alveolar macrophages with intracellular budding yeast.  Similar organisms were seen in biopsy samples of the spleen and liver.  The fungal culture demonstrated large macroconidia with finger-like projections.  The most likely organism involved is (M60-13, 15, 17, 21; Level 3):

Which of the following marker(s) indicate a resolved infection with HBV (M66-18; Level 2)?

The following disease is a latent infection caused by the varicella zoster virus (VZV) (M66-6, 7; Level 2):

Which of the following describes the viral replication sequence that results in cell destruction (M65-2, 3, 5; Level 2)?

Epstein-Barr virus is associated with which of the following diseases:

If a liquid stool specimen cannot be examined within 30 minutes of passage, the specimen should be (M46-8; Level 2):

The following indicates a possible acute infection with Hepatitis B (M65-18; Level 2):

A patient from eastern Kentucky had a recurring cough which progressively worsened over time with concurrent weight loss.  Sputum samples showed round yeast with thick connection budding forms on a direct mount.  The most likely cause of the pneumonia is:

Which of the following is most likely to be found in clinical specimens as normal flora as well as a clinically significant isolate (M62-16; Level 1)?