BACTERIOLOGY : Campylobacter jejuni
Before 1973, C. jejuni was not recognized as a cause
of human disease. It was not until selective methods for its isolation were
developed that it was recognized as one of the most common causes of infectious
diarrhea. Like other campylobacters, C.
jejuni grows well only on enriched media under microaerophilic conditions.
That is, it requires oxy-gen at reduced tension (5 – 10%), presumably due to
vulnerability of some of its enzyme systems to superoxides. Growth usually
requires 2 to 4 days, sometimes as much as a week. C. jejuni has the structural components found in other
Gram-negative bacteria (eg, outer membrane, LPS). In contrast to the vibrios,
it does not break down carbohydrates, but uses amino acids and metabolic intermediates
for energy.
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