All of the following statements about El-Tor vibrios are true, except:
Enterotoxin can have direct effects on other tissues besides intestinal epithelial cells is not true. Option 1 - Reservoir: Humans are the only reservoir. Option 2 - Vibrios are resistant to high alkalinity. Option 3 - Cholera toxin: exotoxin, heat-labile protein- destroyed by heating at 56degC for 15 minutes. Option 4 - V. cholera enterotoxin do not have any affects on extra-intestinal tissues (lack of receptors of toxin).
Humans are the only reservoir
Resist high alkalinity
Killed by boiling for 15 minutes
Enterotoxin can have direct effects on other tissues besides intestinal epithelial cells.
Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli)