*Campylobacter jejuni* infections are a common cause of gastroenteritis worldwide, more frequent than those caused by *Salmonella*, *Shigella*, or *Escherichia coli* O157:H7. In developed countries, the incidence peaks during infancy and early adulthood, often following the consumption and handling of poultry. Symptoms include diarrhea, fever, and abdominal cramps, and diagnosis is typically confirmed through stool cultures. A recent concern is the rapid emergence of antimicrobial-resistant *Campylobacter* strains, largely due to the use of antibiotics in animals. Complications are rare but can include Guillain-Barré syndrome, which occurs in less than 1 per 1000 infections. Prevention involves careful food preparation and cooking practices, as well as avoiding consumption of unpasteurized milk and untreated water. Treatment focuses on maintaining hydration and electrolyte balance, with antibiotics reserved for specific clinical circumstances.*Campylobacter jejuni* infections are a common cause of gastroenteritis worldwide, more frequent than those caused by *Salmonella*, *Shigella*, or *Escherichia coli* O157:H7. In developed countries, the incidence peaks during infancy and early adulthood, often following the consumption and handling of poultry. Symptoms include diarrhea, fever, and abdominal cramps, and diagnosis is typically confirmed through stool cultures. A recent concern is the rapid emergence of antimicrobial-resistant *Campylobacter* strains, largely due to the use of antibiotics in animals. Complications are rare but can include Guillain-Barré syndrome, which occurs in less than 1 per 1000 infections. Prevention involves careful food preparation and cooking practices, as well as avoiding consumption of unpasteurized milk and untreated water. Treatment focuses on maintaining hydration and electrolyte balance, with antibiotics reserved for specific clinical circumstances.