American Society of Microbiology ABMM 認定 ABMM 試験問題:

1. An acid-fast bacillus isolate recovered from a respiratory specimen after 3 weeks of incubation on Löwenstein- Jensen medium is initially non-pigmented when grown in the dark. After exposure to light for several hours, the colonies develop a distinct yellow-orange pigment. This organism is classified as a:

A) Photochromogen
B) Nonchromogen
C) Rapid grower
D) Scotochromogen

2. A clinical trial is evaluating the efficacy of a new antifungal agent against invasive aspergillosis. Serum galactomannan levels are being used as a biomarker to monitor the infection. A decrease in galactomannan levels during treatment would indicate:

A) Concurrent infection with a non-Aspergillus mold.
B) Successful clearance or reduction of the Aspergillus burden.
C) A false-positive result in the galactomannan assay.
D) Development of resistance to the antifungal agent.

3. A serum sample from an asymptomatic patient screened for syphilis yields a reactive Rapid Plasma Reagin (RPR) test result with a titer of 1:16, but a non-reactive Treponema pallidum particle agglutination (TP-PA) test. What is the most likely interpretation of these findings?

A) Early primary syphilis (before treponemal antibodies develop)
B) Biological false positive (BFP) RPR reaction
C) Prozone phenomenon in the TP-PA test
D) Successfully treated past syphilis infection

4. Which virus is recognized as the leading cause of sporadic, severe gastroenteritis in infants and young children globally, for which effective vaccines are now available?

A) Norovirus
B) Astrovirus
C) Enteric Adenovirus (serotypes 40, 41)
D) Rotavirus

5. A clinical microbiology laboratory is implementing a new multiplex nucleic acid amplification test (NAAT) for the detection of respiratory viral pathogens. To ensure the quantitative accuracy of the assay, it is essential to include:

A) Calibration standards with known concentrations of target nucleic acids.
B) Internal controls to monitor for PCR inhibition.
C) External quality assessment samples.
D) Only positive and negative controls.

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