Related Experiment Video
Updated: Jul 11, 2026

06:55
A High-throughput Platform for the Screening of Salmonella spp./Shigella spp.
Published on: November 7, 2018
[Uncovering the giardiasis-outbreak in Bergen 2004]
Knut-Arne Wensaas1, Nina Langeland, Guri Rørtveit
1Seksjon for allmennmedisin, Institutt for samfunnsmedisinske fag, Universitetet i Bergen, 5020 Bergen. awensaas@online.no
Summary
Doctors in Bergen discussed cases to diagnose a large giardiasis outbreak, highlighting the need for better communication between clinicians and public health authorities during public health emergencies.
Area of Science:
- Infectious Disease Epidemiology
- Clinical Diagnostics
Context:
- A significant community outbreak of giardiasis occurred in Bergen in autumn 2004.
- The outbreak was recognized approximately two months after the initial patient illnesses.
Purpose:
- To describe the diagnostic strategies employed by clinicians facing an unrecognized public health issue.
- To analyze clinician responses upon detection of a communicable disease outbreak.
Summary:
- Focus group interviews with clinicians revealed that collaborative discussions were key to diagnosing the giardiasis outbreak.
- No single diagnostic pathway was followed; instead, clinicians collectively addressed the emerging problem.
- Contact with public health authorities occurred upon confirmation of linked diarrheal disease cases.
Impact:
- Highlights the critical role of peer-to-peer clinical discussion in outbreak detection.
- Underscores the necessity for improved communication protocols between healthcare providers and public health bodies for suspected communicable disease outbreaks.
Related Concept Videos
Giardiasis
Giardiasis is a globally prevalent intestinal infection caused by the protozoan parasite Giardia duodenalis (also known as G. lamblia or G. intestinalis). This flagellated protozoan is the most frequently identified intestinal parasite in the United States and worldwide. Transmission primarily occurs via the fecal-oral route, with infection arising from ingestion of water or food contaminated with cysts. Individuals in low-resource settings, international travelers, outdoor enthusiasts, daycare...
Investigation of Disease Outbreaks
Multistate foodborne outbreaks pose significant public health risks and require meticulous investigation to identify sources and implement control measures. The Centers for Disease Control and Prevention (CDC) utilizes a dynamic seven-step process for these investigations, integrating data from laboratories, interviews, and environmental assessments to protect public health.Outbreak Detection: The detection of multistate outbreaks typically begins with PulseNet, the CDC's national laboratory...
Steps in Outbreak Investigation
In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
Bacterial Gastroenteritis
Bacterial gastroenteritis, characterized by diarrhea, abdominal cramps, and vomiting, is often caused by ingestion of contaminated food or water and is frequently associated with pathogenic Escherichia coli strains. These microbes exploit two principal mechanisms to inflict disease.Shiga toxin–producing E. coli, also referred to as STEC—notably O157:H7—release Shiga toxins that target ribosomes, blocking protein synthesis. The B subunit of the toxin binds the host glycolipid receptor...
Amebiasis
Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...
