A 6-year-old boy was diagnosed with purulent conjunctivitis caused by a species of Haemophilus. What would the biochemical profile of the organism be?
a. Growth requirements require both X and V factors; the organism is hemolytic on rabbit blood.
b. Growth requirements require both X and V factors; the organism is nonhemolytic on rabbit blood.
c. Growth requirements require V factor; the organism is hemolytic on rabbit blood.
d. Growth requirements require X factor; the organism is nonhemolytic on rabbit blood.
A
The organism responsible for causing purulent conjunctivitis is H. aegyptius. Biochemically, it requires both X and V factors for growth and is hemolytic on rabbit blood.
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