Question 1

During an investigation of a foodborne outbreak linked to a church supper, 80 people ate the suspected chicken dish, and 32 subsequently developed gastroenteritis. Among 50 people who did not eat the chicken dish, 5 developed similar symptoms. What is the attack rate among those who ate the chicken dish?

Options :

A : 5%

B : 10%

C : 40%

D : 64%

Answer: C

Question 2

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:

Options :

A : The specific antibiotic susceptibility profile of the predominant bacterial pathogen.

B : The presence of fastidious or unculturable pathogens that may be missed by traditional methods.

C : The relative proportions of different immune cell populations in the BAL fluid.

D : The presence of specific virulence factors expressed by the identified pathogens.

Answer: B

Question 3

During the investigation of a foodborne illness outbreak linked to raw sprouts, several bacterial isolates are obtained from patient stool samples and the implicated food source. Which of the following molecular methods would be MOST useful for establishing a definitive link between the clinical isolates and the food isolate?

Options :

A : Gram staining and biochemical profiling

B : Serotyping based on O and H antigens

C : Pulsed-field gel electrophoresis (PFGE)

D : Antimicrobial susceptibility testing

Answer: C

Question 4

A clinical laboratory manager is implementing a new automated blood culture system. Which aspect is LEAST likely to be part of the initial verification/validation process before clinical use?

Options :

A : Comparison of time-to-detection with the previous system

B : Verification of detection of a panel of common bloodstream pathogens

C : Assessment of the system's contamination rate over one year of routine use

D : Establishing workflow and training competency for laboratory staff

Answer: C

Question 5

A patient develops a vesicular rash on their hands and feet, accompanied by fever and oral ulcers. The MOST likely causative agent is:

Options :

A : Varicella-zoster virus

B : Herpes simplex virus

C : Coxsackievirus A

D : Measles virus

Answer: C

Confidently Practice Online with Free ABMM Exam Cram

Buying Options: