Medicine Salmonella typhi is the causative agent of typhoid fever. The infective dose of S. typhi is – A One bacillus B 1 08-1 01deg bacilli C 102-105 bacilli D 1-10 bacilli 💡 Explanation Salmonella typhi is the causative agent of typhoid fever. The infective dose of S. typhi is - ✓ Correct Answer: C. 102-105 bacilli