Bacterial Species and Clinical Manifestations Quiz

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What are the virulence factors of Enterococci?

Biofilm formation, flagella, and pili

Toxins, exoenzymes, and adhesins

Polysaccharide capsule, endotoxin, and outer membrane proteins (correct)

Hemolysins, leukocidins, and streptokinase

Which species is capsulated and lens-shaped?

Enterococci

Streptococcus pneumoniae

Neisseria meningitidis (correct)

Streptococcus pyogenes

How can Neisseria meningitidis be diagnosed in the laboratory?

Urine antigen detection

Culturing from CSF, blood, or nasopharyngeal swabs (correct)

Serologic testing

PCR testing

Which infection can Neisseria meningitidis cause in susceptible individuals?

Pyogenic meningitis and septicemia Signup and view all the answers

What is the drug of choice for treating Neisseria meningitidis infections?

Third generation cephalosporins Signup and view all the answers

What is the most common clinical manifestation of Streptococcus pneumoniae infection?

Pneumonia Signup and view all the answers

Which of the following is the most important virulence factor of Streptococcus pneumoniae?

Capsule Signup and view all the answers

How can Streptococcus pneumoniae be differentiated from other Streptococcus species in the laboratory?

By their susceptibility to optochin Signup and view all the answers

Which antibiotic is the drug of choice for treating Streptococcus pneumoniae infections?

Penicillin-G Signup and view all the answers

Which vaccine is recommended for the prevention of pneumococcal infections?

Both PPSV23 and PCV13 Signup and view all the answers

What is the primary reservoir for Streptococcus agalactiae (Group B Streptococcus)?

Female genital tract Signup and view all the answers

Which of the following is NOT a suppurative manifestation of Streptococcus pyogenes?

Acute rheumatic fever Signup and view all the answers

What is the leading cause of lobar pneumonia and otitis media in children, as well as meningitis in all ages?

Streptococcus pneumoniae Signup and view all the answers

Which of the following statements about the laboratory diagnosis of Streptococcus pyogenes is INCORRECT?

It is bacitracin-resistant Signup and view all the answers

Which virulence factor of Streptococcus pyogenes is responsible for non-suppurative manifestations like acute rheumatic fever and post-streptococcal glomerulonephritis?

Molecular mimicry Signup and view all the answers

Which antibiotic is primarily used for the treatment of Streptococcus pyogenes infections?

Penicillin Signup and view all the answers

Which of the following statements about Streptococcus pyogenes is CORRECT?

It can cause dental caries, subacute bacterial endocarditis, and suppurative infections Signup and view all the answers

Bacterial Species and Clinical Manifestations Quiz

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