Pass the American Society of Microbiology ASM-ABMM ABMM Questions and answers with ExamsMirror

A clinical microbiology laboratory is performing antimicrobial susceptibility testing on a Streptococcus pneumoniae isolate using broth microdilution. The lowest concentration of antibiotic that inhibits visible growth of the organism is reported as the:

A patient with a history of solid organ transplantation develops diarrhea and abdominal cramps. Stool studies are negative for bacterial pathogens and C. difficile toxins. Colonoscopy reveals characteristic cytomegalic inclusion bodies in colonic biopsies. The MOST likely causative agent is:

A sputum sample from a patient with suspected pulmonary tuberculosis is submitted for AFB smear and culture. The smear is reported as positive for acid-fast bacilli (4+). Which method is considered the gold standard for confirming the identification of Mycobacterium tuberculosis complex from culture?

A patient presents with symptoms suggestive of primary syphilis. Which diagnostic test typically becomes positive earliest in the course of infection?

A microbiology laboratory receives a bronchoalveolar lavage sample from a patient with suspected ventilator-associated pneumonia. Quantitative culture yields >10^5 CFU/mL of a Gram-negative rod. Identification reveals Stenotrophomonas maltophilia. The MOST significant resistance mechanism commonly associated with this organism is:

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?

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

During an outbreak of norovirus gastroenteritis in a nursing home, environmental swabs are collected to identify the source of the infection. Which of the following methods would be MOST appropriate for detecting norovirus in these samples?

Under the Clinical Laboratory Improvement Amendments (CLIA), participation in an approved external Proficiency Testing (PT) program serves primarily to:

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: