Stomach Flu Symptoms 2024. The main symptoms of norovirus are: The most common symptoms of norovirus are diarrhea, vomiting, stomach pain, and nausea.
Cases of norovirus, aka the stomach flu, continue to climb across the u.s. About one in five people diagnosed with covid ( sars‑cov‑2) will have gi symptoms, and nearly 70% of this group will experience diarrhea.