Which of the following has least minimum infective dose(MID) required for causing infection:: (A) Salmonella typhi, (B) Campylobacter jejuni, (C) Shigella dysentery, (D) Vibrio cholera
Answer is C. Ans. (c) Shigella dysentery "Shigella cause bacillary dysentery. Infection occur by ingestion. The minimum infective dose is low: as few as I0-I(N bacilli are capable of initiating the disease, probably because they survive gastric acidity better than other enterobacter"- Ananthanarayan.