Pharmacology Catalase negative member of the family Enterobacteriaceae is (NOT RELATED) A Salmonella typhi B Proteus vulgaris C Shigella dysenteriae serotype 1 D Escherichia coli 💡 Explanation Catalase negative member of the family Enterobacteriaceae is (NOT RELATED) ✓ Correct Answer: C. Shigella dysenteriae serotype 1