最新的American Society of Microbiology ABMM - ABMM免費考試真題
Metagenomic analysis of a bronchoalveolar lavage (BAL) sample from a patient with severe pneumonia reveals a complex microbial community with a high abundance of both bacterial and fungal sequences. This approach is particularly useful in identifying:
正確答案: B
The azole class of antifungal agents (e.g., fluconazole, voriconazole) exerts its effect primarily by inhibiting which fungal-specific enzyme involved in membrane synthesis?
正確答案: D
A clinical microbiology laboratory is using CRISPR-based technology for rapid and sensitive detection of specific bacterial DNA sequences directly from patient samples. This method relies on the ability of the Cas enzyme to:
正確答案: A
A patient with HIV infection and a CD4+ T-cell count below 100 cells/µL presents with headache, fever, and altered mental status. CSF analysis reveals elevated protein and low glucose. India ink stain is negative.
Cryptococcal antigen test of the CSF is positive. The MOST appropriate initial treatment is:
Cryptococcal antigen test of the CSF is positive. The MOST appropriate initial treatment is:
正確答案: C
A clinical microbiology laboratory is evaluating a new multiplex PCR assay for the detection of respiratory viruses. To assess the assay's specificity, they test a panel of samples known to contain various bacterial pathogens. A positive result is obtained for rhinovirus in a sample containing only Streptococcus pneumoniae.
This indicates:
This indicates:
正確答案: A
Acyclovir is a commonly used antiviral agent effective against Herpes Simplex Virus (HSV) and Varicella- Zoster Virus (VZV). Its selective toxicity relies on which initial step for activation within infected cells?
正確答案: A
A key virulence factor of Neisseria meningitidis that plays a major role in immune evasion and is the target for serogrouping is the:
正確答案: B
A clinical microbiology laboratory is investigating a cluster of Clostridium difficile infections in a hospital.
Which of the following methods is MOST appropriate for determining if the isolates from different patients are related?
Which of the following methods is MOST appropriate for determining if the isolates from different patients are related?
正確答案: D
Chagas disease, characterized by acute Romana's sign and potential chronic cardiac and gastrointestinal complications, is caused by which vector-borne protozoan parasite?
正確答案: B
A patient undergoing chemotherapy for leukemia develops a severe pneumonia. Bronchoalveolar lavage fluid is examined, revealing numerous cysts containing crescent-shaped structures upon silver staining. The patient's CD4+ T-cell count is significantly low. The MOST likely diagnosis is infection with:
正確答案: B