Stomach Flu Symptoms 2024 Adults. Occurring due to infection and inflammation of the intestines and stomach, typical symptoms include fever, diarrhea, abdominal pain, and vomiting. Flu symptoms include fever, chills, muscle aches, fatigue, cough, sore throat and runny or stuffy nose.
Sick with the stomach flu? The main symptoms are nausea, vomiting, diarrhea, and/or stomach cramping.