Vomiting Bug (Gastroenteritis)

The term "vomiting bug" is a colloquialism commonly used to describe gastroenteritis, which is an inflammation of the gastrointestinal tract, typically the stomach and intestines. This condition is usually caused by a viral or bacterial infection.

Causes

  • Viral infections: Norovirus and rotavirus are the most common causes of gastroenteritis, leading to symptoms like vomiting, diarrhea, and stomach cramps.
  • Bacterial infections: Bacteria such as Escherichia coli (E. coli), Salmonella, and Campylobacter can also cause gastroenteritis, often through contaminated food or water.

Symptoms

  • Vomiting
  • Diarrhea
  • Abdominal cramps
  • Fever
  • Nausea
  • Loss of appetite
  • Weight loss (in severe cases)

Transmission

The vomiting bug can be highly contagious and is often spread through:

  • Close contact with an infected person
  • Consuming contaminated food or water
  • Touching contaminated surfaces and then touching one's mouth

Treatment and Management

The primary goal of treatment is to replace lost fluids and electrolytes, manage symptoms, and prevent complications. This can be achieved through:

  • Oral rehydration therapy (drinking plenty of fluids, such as water or oral rehydration solutions)
  • Rest
  • A bland diet (e.g., bananas, rice, applesauce, toast) to help firm up stool and reduce vomiting
  • Over-the-counter medications for symptom relief, under the guidance of a healthcare professional

Prevention

To prevent the spread of gastroenteritis:

  • Practice good hygiene (frequent handwashing with soap and water)
  • Avoid close contact with individuals who are infected
  • Ensure proper food handling and preparation techniques
  • Avoid sharing utensils, towels, or personal items

Complications

In severe cases, gastroenteritis can lead to complications such as:

  • Dehydration
  • Electrolyte imbalance
  • Malnutrition (particularly in vulnerable populations like the elderly or young children)

Article last updated on: 4th May 2025.
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