Outbreak of Salmonella food poisoning amongst delegates at a medical conference
Related Experiment Video
Updated: Jul 26, 2026

Chronic Salmonella Infected Mouse Model
Published on: May 31, 2010
S R Palmer1, J E Watkeys, I Zamiri
1CDSC Welsh Unit.
Abstract:
An outbreak of Salmonella typhimurium DT9 food poisoning due to contaminated chicken pieces affected at least 196 delegates at a medical conference. Twelve per cent of the cases reported suffering parasthaesiae. Nine reported serious complications of infection which included rectal prolapse and perianal abscess. Antibiotic therapy did not measurably reduce the duration or severity of diarrhoea. Over 1,600 doctor-days were lost to the NHS. Most doctors sought expert infection control advice before returning to work but the advice given differed between hospitals.
Insights
A Salmonella typhimurium DT9 outbreak linked to chicken sickened 196 medical delegates, causing serious complications and significant NHS work loss. Antibiotic treatment showed no benefit in reducing illness duration or severity.
Area of Science:
- Foodborne illness
- Microbiology
- Public Health
Background:
- An outbreak of Salmonella typhimurium DT9 food poisoning occurred at a medical conference.
- Contaminated chicken pieces were identified as the source of the outbreak.
- The outbreak affected at least 196 delegates.
Framework:
- Investigating the clinical features and complications of Salmonella typhimurium DT9 infection.
- Evaluating the effectiveness of antibiotic therapy in managing the illness.
- Assessing the impact of the outbreak on healthcare services.
Implementation:
- Clinical data collection from affected delegates.
- Analysis of infection control practices and advice provided to healthcare workers.
- Monitoring of illness duration, severity, and complications.
Implications:
- Highlights the public health risk associated with foodborne pathogens like Salmonella.
- Underscores the need for consistent and evidence-based infection control guidance.
- Demonstrates the substantial economic and healthcare burden of food poisoning outbreaks.
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Steps in Outbreak Investigation
Sources of Food Contamination
Reservoir of Infection
Investigation of Disease Outbreaks
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