strp neumoniae and strep viridans

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What is the treatment of choice for Streptococcus viridans infections?

Penicillin G with aminoglycosides (correct)

Azithromycin

Ceftriaxone

Amoxicillin

Which vaccine is conjugated to a protein for better antigen response in children?

12 valent protein-conjugated vaccine

7 valent polysaccharide vaccine (correct)

23 valent polysaccharide vaccine

5 valent protein-conjugated vaccine

What characteristic differentiates Streptococcus viridans from Streptococcus pneumoniae?

Optochin resistance (correct)

Armor-like capsule

Yellow pigmentation

Bile solubility

What feature allows Streptococcus viridans to adhere to fibrin platelet aggregates in the heart?

Dextran synthesis from glucose Signup and view all the answers

Which disease is most commonly associated with Streptococcus viridans colonization of damaged heart valves?

Subacute endocarditis Signup and view all the answers

What is the recommended prevention strategy prior to dental work for individuals with damaged heart valves?

Prophylactic antibiotics Signup and view all the answers

What is the major virulence factor of Streptococcus pneumoniae?

Polysaccharide capsule Signup and view all the answers

Which of the following diseases is NOT primarily caused by Streptococcus pneumoniae?

Gastroenteritis Signup and view all the answers

What is the significance of the 'double lance' feature in the analogy?

It represents the lancet-shaped diplococci of Streptococcus pneumoniae Signup and view all the answers

What is the significance of the 'mud on horses legs' feature in the analogy?

It represents the bile solubility of Streptococcus pneumoniae Signup and view all the answers

Which of the following is NOT a virulence factor of Streptococcus pneumoniae mentioned in the text?

Lipopolysaccharide (LPS) Signup and view all the answers

What is the significance of the 'sickle' feature in the analogy?

It represents the increased susceptibility to Streptococcus pneumoniae infection in individuals with sickle cell anemia Signup and view all the answers

Which antibiotic is recommended for the treatment of Streptococcus viridans infections along with aminoglycosides?

Penicillin G Signup and view all the answers

What is the main feature that differentiates Streptococcus viridans from Streptococcus pneumoniae based on the given analogy?

Bile resistance Signup and view all the answers

Which vaccine induces an IgM response in adults and an IgG response in children due to its conjugation to a protein?

7-valent conjugate vaccine Signup and view all the answers

What is the characteristic disease associated with Streptococcus viridans colonization in damaged heart valves that commonly occurs in the mitral valve?

Subacute endocarditis Signup and view all the answers

Which feature of Streptococcus viridans allows it to adhere to fibrin platelet aggregates in the heart?

Dextran synthesis Signup and view all the answers

Which response mechanism results in IgM production that does not last long in adults but leads to IgG production in children for the pneumococcal vaccines mentioned?

T-Cell independent response Signup and view all the answers

What does the 'purple background' represent in the analogy?

The catalase-negative characteristic of Streptococcus pneumoniae Signup and view all the answers

What is the significance of the 'α knight tournament' in the analogy?

It represents the partial hemolysis pattern of Streptococcus viridans on blood agar Signup and view all the answers

What does the 'rust colored single lobe on chest' represent in the analogy?

Both a and b Signup and view all the answers

What does the 'cracked shield with the symbol of IgA dimer molecule' represent in the analogy?

The ability of Streptococcus pneumoniae to cleave IgA, reducing host defenses Signup and view all the answers

What does the 'techoic acid' feature represent in the analogy?

The ability of Streptococcus pneumoniae to inhibit complement activation Signup and view all the answers

What does the 'Number 1 sign' represent in the analogy?

Streptococcus pneumoniae is the leading cause of meningitis, otitis media, pneumonia, and sinusitis Signup and view all the answers