What are the symptoms caused by the bacterium hafnia alvei?

Hafnia alvei is a bacterium that can be associated with gastrointestinal infections, typically presenting symptoms such as diarrhea, abdominal cramps, nausea, and vomiting. In some cases, it may also lead to more severe conditions, especially in immunocompromised individuals, including sepsis or infections in other body systems. However, infections are relatively rare, and many people may carry the bacterium without showing symptoms.