The majority of clinical isolates of Klebsiella are

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Prepare for the Clinical Laboratory Science Bacteriology Test. Engage with multiple choice questions and flashcards with helpful hints and explanations. Ace your exam confidently!

Multiple Choice

The majority of clinical isolates of Klebsiella are

Explanation:
Most clinical isolates of Klebsiella come from Klebsiella pneumoniae. This species is the primary cause of Klebsiella infections encountered in patient samples, including pneumonia, urinary tract infections, liver abscesses, and bacteremia, so it is by far the most commonly recovered among Klebsiella species. Its success is helped by a thick polysaccharide capsule that makes colonies appear mucoid and helps the bacteria resist immune defenses. The other listed species do occur, but far less often in routine clinical practice—for example, K. ozaenae is rare and linked to specific nasal disease, K. oxytoca can cause similar infections but is less frequent, and K. aerogenes is not the predominant clinical isolate.

Most clinical isolates of Klebsiella come from Klebsiella pneumoniae. This species is the primary cause of Klebsiella infections encountered in patient samples, including pneumonia, urinary tract infections, liver abscesses, and bacteremia, so it is by far the most commonly recovered among Klebsiella species. Its success is helped by a thick polysaccharide capsule that makes colonies appear mucoid and helps the bacteria resist immune defenses. The other listed species do occur, but far less often in routine clinical practice—for example, K. ozaenae is rare and linked to specific nasal disease, K. oxytoca can cause similar infections but is less frequent, and K. aerogenes is not the predominant clinical isolate.

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