18 Questions
What is the most common cause of subacute bacterial endocarditis?
Viridans streptococci
Which streptococci is an opportunistic pathogen that can enter the bloodstream through dental procedures?
Viridans streptococci
Which streptococci are predominantly found in the oral cavity, upper respiratory tract, female genital tract, and gastrointestinal tract?
Viridans streptococci
Which streptococci have virulence factors including capsule, extracellular dextrans & glucans, and surface-associated adhesions?
Viridans streptococci
What type of infections can be caused by Group C, G & F Streptococci in neonates?
Meningitis and pneumonia
Which streptococci are skin tested to detect the presence of antibodies against pneumococci?
Streptococcus pneumoniae
Which of the following infections is associated with maternal infection by Streptococci?
Chorioamnionitis
Which streptococcus is commonly isolated in children under 3 years old with recurrent otitis media?
Streptococcus pneumoniae
What is a characteristic feature of S.dysagalctiae subsp.equisimilis among Streptococci?
LARGE-colony forming; beta-hemolytic
Enterococcus is indigenous to which part of the body?
Intestinal tracts
What kind of reaction do Enterococci produce that results in weak bubble formation?
Pseudocatalase reaction
Which virulence factor of Enterococcus plays a role in adherence?
Extracellular surface adhesion proteins
Which term best describes the arrangement of Streptococci in thioglycollate broth?
Chains
What is the catalase characteristic of Streptococci?
Negative
Which group of Streptococci requires 5-10% CO2 for growth?
Pyogenic Group
Which hemolytic pattern is associated with Alpha Hemolytic Streptococci?
Partial/Incomplete hemolysis
What type of colonies are commonly observed in Streptococci cultures?
Grayish and pinpoint
What distinguishes Streptococcus pneumoniae from other Streptococci in terms of arrangement?
Diplococci
Learn about the general characteristics of Streptococcus, Enterococcus, and related organisms commonly found in clinical bacteriology, such as their gram staining, catalase reaction, motility, and anaerobic requirements.
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