Microbiology - Clinical Correlates, Bacteria

Biology
NBME-styled prompts for each bug from the last week, with the most typical presentation and some info on culture and staining. The antibiotic therapy for each is in the answer. Edited for Neisseria meningitidis.

Sample Data

Front This infection is characterized by a subacute pneumonia, that progresses to respiratory failure and meningitis with brain abscesses in immunocompromised males. Stain/visualization shows a weakly staining gram positive rod, that is branching and filamentous (like fungi). It is weakly acid-fast.
Back Nocardia asteroides. Treat with sulfonamides for 6 months, and total bed rest.
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Front This infection is characterized by a painless sore at the site of infection with local lymph node swelling. 4-10 weeks later, flu-like symptoms and a full-body rash develop. If untreated, multi-organ destruction arises 3-15 years later, especially in immunocompromised patients. Stain/visualization is unsuccessful, and dark-field microscopy shows thin, coiled bacteria that can't be cultured.
Back Treponoma pallidum (Syphillis). Treat with penicillin, and if allergic, use doxycycline.
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Front This infection is characterized by erythamatous nodules, papules, and slow-developing, extensive tissue destruction. Patchy sensory loss and other forms of nerve damage can surround these pathces of nodules. Can be associated with playing with armidillos, are recent immigration from Mexico, Asia, and Africa. Stain/visualization shows rod-shaped bacteria that are acid fast, and weakly gram positive. These are unable to be cultured in artifical media.
Back Mycobacterium leprae, lepromatis. Treat with rifampicin, dapsone, and clofazimine for 12 months.
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