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9093 Microbiology

In a school child had abscess on lower leg. Swab taken revealed gram positive beta-hemolytic streptococci, and these were bacitracin sensitive. School physician observed that similar organism was isolated from throats of many other children. Which of the following is true statement with regards to this patient?

ADifference in surface protein can differentiate the pathogenic bacteria from the pharyngeal culture bacteria
BComponent C carbohydrate can differentiate the pathogenic bacteria from the throat culture bacteria
CMEG 3 positive are throat culture streptococci
DDepending on M protein the cutaneous pathogenic bacteria can be differentiated from the pharyngeal culture bacteria
Microbiology
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9098 Microbiology

An infant had high grade fever and respiratory distress at the time of presentation to the emergency room. The sample collected for blood culture was subsequently positive showing growth of Ξ±Ξ±Ξ±Ξ±Ξ± -hemolytic colonies. On Gram staining these were gram positive cocci. In the screening test for identification, the suspected pathogen is likely to be susceptible to the following agent :

ABacitracin
BNovobiocin
COptochin
DOxacillin
Microbiology
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