Minimum infective dose of shigella is :
Correct Answer: 10-100
Description: Ans: B (10-100) "It has been shown that 106 pathogenic vibrios administered to fasting normochlorhydric volunteers, without food or buffer, did not produce infection, while the same dose along with food or sodium bicarbonate caused dinical cholera in 80-100 % of them"- Ananthanarayan 9th/307"Shigella cause bacillary dysentery. Infection occurs by ingestion. The minimum infective dose is low- as few as 10-100 bacilli are capable of initiating the disease, probably because they survive gastric acidity better than other enterobacteria"- Ananthanarayan 9th/287"Enteric fever(salmonella): In human volunteer experiments, the ID 50(infective dose) was found to be about 103 to 106 bacilli - Ananthanarayan 9th/295
Category:
Microbiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now