👉 Listerellos are a type of bacteria that can cause diarrhea in humans. Listerella is a common pathogen found in animal feces and water, and it can also be present in human fecal matter. When these bacteria enter the body through contaminated food or water, they can multiply rapidly and produce toxins that can irritate the digestive system and cause symptoms such as diarrhea, abdominal pain, fever, and redness of the skin and eyes. It's important to keep an eye on