Streptococci, Enterococci

Multiple Choice

Which of the following is a leading cause of community-acquired pneumonia?

• Streptococcus pyogenes

• Streptococcus pneumoniae

• Enterococcus faecalis

• Viridans streptococci

Open Ended

Why is it important for pharmacists to understand the clinical relevance of streptococci and enterococci infections?

Multiple Choice

Which of the following is NOT a key characteristic of gram-positive cocci?

• Form pairs or chains during growth

• Catalase-negative

• Gram-negative spherical bacteria

• Widely distributed in nature

Multiple Choice

Why are multiple classification systems used for streptococci?

• Because one system is universally accepted

• Because streptococci are a large, heterogeneous group

• Because all species have the same characteristics

• Because taxonomy is fixed and unchanging

Open Ended

Describe the visual differences between beta, alpha, and gamma hemolysis patterns on blood agar.

Multiple Choice

Which of the following groups is correctly matched with its clinical association according to the Lancefield classification?

• Group A - Neonatal infections

• Group B - Strep throat

• Group C & G - Pharyngitis

• Group D - Pharyngitis

Multiple Select

Select all correct statements about hemolysis patterns and clinical groups of streptococci.

• Pyogenic streptococci are beta-hemolytic

• Viridans group are alpha-hemolytic or non-hemolytic

• S. pneumoniae is beta-hemolytic

• Enterococci belong to Group D

Fill in the Blank

Fill in the blank: The major clinical group of streptococci associated with healthcare-associated infections is ___.

Multiple Choice

Which of the following is a key feature of Streptococcus pyogenes (Group A Strep)?

• Bacitracin sensitivity

• Gram-negative cocci

• Catalase positive

• Non-hemolytic

Open Ended

Describe the microscopic and colonial appearance of S. pyogenes and explain how these features aid in its identification in the laboratory.

Multiple Select

Which of the following are major virulence factors of S. pyogenes?

• M protein

• Hyaluronic acid capsule

• Streptokinase

• Catalase

Fill in the Blank

Streptolysin O and S are ___ that cause β-hemolysis in S. pyogenes infections.

Multiple Choice

Which clinical syndrome is most commonly associated with non-invasive S. pyogenes infection?

• Pharyngitis

• Necrotizing fasciitis

• Bacteremia

• Toxic shock syndrome

Open Ended

Compare and contrast acute rheumatic fever and post-streptococcal glomerulonephritis in terms of timing, pathogenesis, and clinical significance.

Multiple Choice

Which of the following is considered the gold standard for the laboratory diagnosis of S. pyogenes?

• Rapid antigen test

• Blood culture

• Blood agar with bacitracin disk

• ASO titer

Open Ended

Explain why adherence counseling is crucial in the treatment of S. pyogenes pharyngitis.

Multiple Select

Which of the following are key features of Streptococcus agalactiae (Group B Strep)?

• CAMP test positive

• α-hemolytic

• Hippurate hydrolysis positive

• β-hemolytic, Group B

Fill in the Blank

The screening protocol for Group B Strep in pregnant women involves rectal/vaginal swabs at ___ weeks of pregnancy.

Multiple Choice

Which laboratory characteristic distinguishes Groups C and G Streptococci from Group A Streptococci?

• Optochin resistance

• Bacitracin resistance

• CAMP test positivity

• α-hemolysis

Multiple Choice

Which clinical condition is most commonly associated with Viridans group streptococci?

• Acute glomerulonephritis

• Subacute endocarditis

• Scarlet fever

• Neonatal sepsis

Multiple Choice

Which group of Viridans streptococci is most commonly associated with dental caries?

• S. mitis group

• S. mutans group

• S. anginosus group

• S. bovis group

Multiple Select

Which of the following are clinical features or complications associated with subacute endocarditis caused by Viridans streptococci?

• Abnormal or damaged valves

• Gradual onset, slowly progressive

• High mortality if untreated

• Immediate onset and rapid progression

Fill in the Blank

Streptococcus pneumoniae is sensitive to ___, which helps differentiate it from other alpha-hemolytic streptococci.

Open Ended

Explain the significance of the polysaccharide capsule in Streptococcus pneumoniae and how it relates to vaccine development.

Multiple Choice

Which of the following factors contribute to the pathogenesis of S. pneumoniae?

• Capsule prevents phagocytosis

• Production of pneumolysin toxin

• Ability to invade tissues

• All of the above

Multiple Choice

Which clinical syndromes are commonly associated with S. pneumoniae infection?

• Pneumonia, otitis media, meningitis

• Cellulitis, hepatitis, conjunctivitis

• Endocarditis, osteomyelitis, pancreatitis

• Pharyngitis, gastroenteritis, arthritis

Multiple Choice

Which of the following is a pharmacy impact related to Streptococci and Enterococci?

• Antibiotic selection and duration

• Performing surgical procedures

• Diagnosing viral infections

• Administering chemotherapy

Open Ended

Summarize one key reason why understanding Streptococci and Enterococci is important for pharmacists.