Microbiology All of the following statements about El-Tor vibrios are true, Except – A Humans are the only reservoir B Can survive in ice cold water for 2-4 weeks C Killed by boiling for 30 seconds D Enterotoxin can have direct effects on other tissues besides intestinal epithelial cells 💡 Explanation All of the following statements about El-Tor vibrios are true, Except - ✓ Correct Answer: D. Enterotoxin can have direct effects on other tissues besides intestinal epithelial cells