最新的American Society of Microbiology ABMM - ABMM免費考試真題
問題1
A laboratory worker sustains a needlestick injury while handling a blood sample known to be positive for Hepatitis B surface antigen (HBsAg) and Hepatitis B e antigen (HBeAg). The worker has completed the HBV vaccination series and has a documented anti-HBs titer >10 mIU/mL one month ago. What is the recommended post-exposure prophylaxis?
正確答案: D
問題2
A patient with HIV infection and a CD4+ T-cell count of 30 cells/µL develops progressive multifocal leukoencephalopathy (PML). The causative agent of PML is:
正確答案: D
問題3
A microbiology laboratory is investigating an outbreak of bloodstream infections in a neonatal intensive care unit. Isolates of Staphylococcus epidermidis from multiple infants show indistinguishable banding patterns by pulsed-field gel electrophoresis (PFGE). This finding MOST strongly suggests:
正確答案: A
問題4
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: C
問題5
A patient presents with a pruritic rash consisting of raised, serpiginous tracks on their skin. The patient recently returned from a Caribbean vacation and reported walking barefoot on the beach. The MOST likely causative organism is:
正確答案: B
問題6
A patient develops a vesicular rash on their hands and feet, accompanied by fever and oral ulcers. The MOST likely causative agent is:
正確答案: C
問題7
A microbiology laboratory is performing Gram staining on a bacterial smear. If the safranin counterstain is omitted, Gram-negative bacteria will appear:
正確答案: D
問題8
A patient with a history of travel to Southeast Asia presents with fever, severe headache, and altered mental status. CSF analysis reveals lymphocytic pleocytosis and elevated protein, but routine bacterial and viral cultures are negative. Serological testing of CSF is positive for IgM antibodies against Japanese encephalitis virus. The MOST likely mode of transmission for this infection is:
正確答案: D
問題9
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
問題10
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: C
問題11
A Gram stain of cerebrospinal fluid (CSF) from a 2-year-old child with meningitis shows small, pleomorphic Gram-negative coccobacilli. Culture on chocolate agar yields growth, but there is no growth on standard 5% sheep blood agar unless streaked near a colony of Staphylococcus aureus. This phenomenon indicates a requirement for which growth factor(s)?
正確答案: D
問題12
A patient with HIV infection and a very low CD4+ T-cell count develops a disseminated infection with a fungus that is commonly found in pigeon droppings. The MOST likely causative agent is:
正確答案: B
問題13
A research laboratory is developing a novel diagnostic assay for early detection of sepsis. They are investigating the use of host biomarkers that are rapidly upregulated in response to bacterial infection. Which of the following biomarkers has shown promise for differentiating between systemic inflammatory response syndrome (SIRS) and sepsis?
正確答案: D
問題14
A clinical microbiology laboratory is investigating a potential outbreak of a highly contagious respiratory virus. To rapidly screen a large number of nasopharyngeal swabs, the MOST appropriate initial diagnostic test would be:
正確答案: D
