The microbiologist identified an organism that produces large γ-hemolytic colonies on blood agar and appears as a gram-variable rod on Gram staining.In order to further identify the organism,the microbiologist should:
A)no further identification is necessary.
B)complete a biochemical panel and antibiotic sensitivity.
C)complete a biochemical panel,no antibiotic sensitivity is warranted.
D)report the organism as Bacillus spp.

Question

Quizplus · Accepted Answer

Based on the information presented in the question,the microbiologist should complete a biochemical identification and an antibiotic susceptibility.At this point,the type of isolate is unknown and therefore,it is important to identify the species to determine the antibiotic pattern.If the organism is indeed B.anthracis,some strains produce β-lactamases.CLSI has published technical guidelines and interpretive criteria for testing Bacillus spp.

The Microbiologist Identified an Organism That Produces Large γ-Hemolytic Colonies