key term - Campylobacter

Definition

Campylobacter is a genus of spiral-shaped, Gram-negative bacteria that are a leading cause of bacterial gastroenteritis worldwide. These microorganisms are particularly relevant in the context of bacterial infections of the gastrointestinal tract.

5 Must Know Facts For Your Next Test

1. Campylobacter is one of the most common causes of bacterial foodborne illness in the United States, responsible for an estimated 1.5 million cases annually.
2. Infection with Campylobacter typically occurs through the consumption of undercooked poultry, unpasteurized dairy products, or contaminated water.
3. The most common Campylobacter species associated with human disease are C. jejuni and C. coli.
4. Campylobacteriosis is usually a self-limiting illness, with symptoms resolving within a week, but can lead to serious complications in some cases.
5. In rare instances, Campylobacter infection can trigger the development of Guillain-Barré Syndrome, an autoimmune disorder that can cause temporary paralysis.

Review Questions

• Describe the key features of Campylobacter that contribute to its role as a leading cause of bacterial gastroenteritis.
  • Campylobacter is a Gram-negative, spiral-shaped bacterium that is well-adapted to colonize the gastrointestinal tract. Its motility, ability to survive in the harsh environment of the intestines, and tendency to contaminate poultry and other food sources make it a highly successful pathogen responsible for a significant portion of foodborne illnesses worldwide. The common Campylobacter species, C. jejuni and C. coli, are particularly adept at causing the diarrheal illness known as campylobacteriosis.
• Explain the link between Campylobacter infection and the development of Guillain-Barré Syndrome.
  • In rare cases, Campylobacter infection can trigger an autoimmune response that leads to the development of Guillain-Barré Syndrome (GBS). This occurs when the body's immune system, in an attempt to fight off the Campylobacter infection, mistakenly attacks the peripheral nerves, causing muscle weakness or even paralysis. The molecular mimicry between certain Campylobacter antigens and the components of the nervous system is thought to be the underlying mechanism behind this rare but serious neurological complication of campylobacteriosis.
• Evaluate the public health significance of Campylobacter as a foodborne pathogen and discuss strategies for prevention and control.
  • Campylobacter is a significant public health concern due to its high incidence and the potential for severe complications, such as Guillain-Barré Syndrome. Preventive measures are crucial to reduce the burden of campylobacteriosis, including thorough cooking of poultry products, proper handling of raw meat, and ensuring the safety of water and dairy supplies. Improving biosecurity measures in poultry production, enhancing food safety regulations, and educating the public on safe food preparation techniques can all contribute to the control and prevention of Campylobacter infections. Continued research into vaccine development and improved diagnostic methods may also play a role in mitigating the impact of this important foodborne pathogen.

Related terms

Campylobacteriosis: The illness caused by infection with Campylobacter bacteria, characterized by diarrhea, abdominal pain, and fever.

Poultry: Domesticated birds, such as chickens and turkeys, that are a common reservoir for Campylobacter and a major source of human infections.

Guillain-Barré Syndrome: A rare neurological disorder that can be triggered by Campylobacter infection and leads to muscle weakness or paralysis.