Several children at a summer camp have lesions on their feet…

Several children at a summer camp have lesions on their feet along with infected toe and finger nails.  The organism has an olive/brown surface with a yellow periphery and a pale yellow reverse. Microscopically, smooth 2-4 celled club-shaped macroconidia and no microconidia are observed. This organism is most likely (M59-17, 21; Level 3):

A microbiologist is reading a sputum culture and notices tha…

A microbiologist is reading a sputum culture and notices that there is no growth on the sheep blood and MacConkey agars, but there is growth on the chocolate plate. The colonies on the plate are translucent, moist, smooth, and convex, with a mousy odor. The dALA test was negative. What is the most likely identification of the organism (M32-30; Level 3)?