Methods for Identification of Etiological Agents of Infectious Disease: Staphylococcus

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10 Questions

Which test is used to differentiate between Staphylococcus aureus and other staphylococci?

Coagulase test

What is the purpose of the Bile Esculin Agar (BEA) plate in the text?

To differentiate Staphylococcus aureus from Enterococcus faecium

Which characteristic of Enterococcus is mentioned in the text?

It grows in the presence of 6.5% NaCl and 40% bile at 45C

What is the purpose of the Novobiocin susceptibility test (NST) mentioned in the text?

To differentiate between Staphylococcus saprophyticus and other coagulase-negative staphylococci

Which of the following is a characteristic of Streptococcus pyogenes mentioned in the text?

It requires media enriched with blood for growth

What is the most significant consequence of Streptococcus entering the bloodstream according to the text?

It can cause a continuous bacteremia and lead to infective endocarditis

What is the primary purpose of obtaining multiple blood cultures according to the text?

To identify the specific bacteria causing the infection

What is the primary function of the anticoagulant in the blood culture media mentioned in the text?

To prevent the bactericidal effect of human serum

What is the ideal ratio of blood to culture medium mentioned in the text?


Which type of bacteremia is most likely to be associated with an intravascular source of infection according to the text?

Continuous bacteremia

Learn about the morphology and cultural characteristics of Staphylococcus bacteria, including their Gram positive nature, Cocci shape, and growth conditions. Explore methods for identification of this infectious disease-causing agent.

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