Which infection is the most common cause of acute gastroenteritis?

The most common cause of acute gastroenteritis is Campylobacter jejuni. This bacterium is frequently associated with the consumption of undercooked or contaminated poultry, as well as unpasteurized milk and untreated water. Campylobacter jejuni is particularly noted for causing gastrointestinal illnesses that lead to symptoms such as diarrhea, abdominal pain, fever, and nausea.

Its prevalence in various populations, especially in the context of foodborne illnesses, makes it a leading pathogen in cases of acute gastroenteritis. Furthermore, studies indicate that Campylobacter is among the top bacterial causes of gastroenteritis internationally. Consequently, its widespread occurrence and transmission routes contribute significantly to its status as the most common infectious agent in acute gastroenteritis cases.

Understanding the role of Campylobacter jejuni in gastroenteritis is critical for healthcare professionals in diagnosing and managing these infections effectively. The other pathogens listed, while important causes of gastroenteritis, do not have the same level of incidence as Campylobacter.