Definition: Pyrosomella is a type of bacterium that can cause disease in humans, particularly in children and young adults. These bacteria are commonly found in the gut of certain animals, including dogs, cats, and horses. They produce toxins that cause inflammation and may lead to symptoms such as diarrhea, abdominal pain, and fever. Symptoms vary depending on the specific strain of Pyrosomella and its location within the body. Treatment often involves antibiotics or supportive care to manage symptoms.