Salmonella
Infants are not susceptible to non-typhoidal Salmonella enteritis
What our notes say
- Infants are not susceptible to non-typhoidal Salmonella enteritis (Paediatrics end of 2nd semester exam (MBPE 4300): 5 October 2021, 50 MCQs)
- Non-typhoidal Salmonella enteritis is usually mild and self-limiting in children. (Paediatrics end of 2nd semester exam (MBPE 4300): 5 October 2021, 50 MCQs)
- *Shigella sonnei* has the lowest ID50 (as few as 10–100 organisms can cause disease) — this is the correct answer whenever compared against *Salmonella typhi, Vibrio cholerae, Campylobacter jejuni* (Streptococcus Classification, S. pyogenes, Rheumatic Fever, AGN)
- Most important host defense preventing dysentery caused by *Salmonella*: gastric juice (stomach acid barrier) — this is the correct answer over salivary enzymes, normal mouth flora, or alpha interferon (Streptococcus Classification, S. pyogenes, Rheumatic Fever, AGN)
- Salmonella takes 6 to 72 hours, Campylobacter 2 to 5 days, cholera a few hours to 5 days, and Bacillus cereus 1 to 16 hours. (Internal Medicine CAT 1 (MBIM 6112), 2019/2020: gastroenterology and hepatology,)
- It follows an enteric infection (Shigella flexneri, Salmonella, Campylobacter, Yersinia) or a genital infection (Chlamydia). (Internal Medicine CAT 1 (MBIM 6112), 2019/2020: gastroenterology and hepatology,)
Study material on Salmonella
- Medical Bacteriology MCQs: ETEC, Pseudomonas, Salmonella & More
- Internal Medicine CAT 1 (MBIM 6112), 2019/2020: gastroenterology and hepatology, 30 MCQs and 4 short answers
- Streptococcus Classification, S. pyogenes, Rheumatic Fever, AGN
- GASTROINTESTINAL PATHOLOGY (Part 2)
- Paediatrics end of 2nd semester exam (MBPE 4300): 5 October 2021, 50 MCQs
- Medical Bacteriology Examination MCQs
- Epidemiology Case Study MCQs
- FAIMSmicro 1 2006
- General Pathology MCQs: Fixatives, FNA, Endocrine & ARDS
- Mbmm3311 – Medical Bacteriology
Practice questions on Salmonella
Which of the following host defense is most important for preventing dysentery caused by Salmonella?
- Gastric juice
- Salivary enzyme
- Normal flora of the mouth
- Alpha interferon Answer:
Answer: A. Stomach acid is the primary barrier destroying ingested *Salmonella* before it reaches the intestine; conditions reducing acidity (antacids, achlorhydria) increase susceptibility. --- ---