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Medicine – MCQ 112 – Infective dose of Salmonella typhi

Salmonella typhi is the causative agent of typhoid fever. The infective dose of S. typhi is:
a) One bacillus
b) 10(8) – 10(10) bacilli
c) 10(2) – 10(5) bacilli
d) 1-10 bacilli

Correct answer : c) 10(2) – 10(5) bacilli (factual question)

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