Susan M. Davis

Stomach Flu Symptoms 2025 In Usa. The most common symptoms of the illness are diarrhea, vomiting, nausea and stomach pain. Kp.3.1.1 is still estimated to be the nation’s most common subvariant.

What to know about the 2025 norovirus season in the us, symptoms, and prevention. The highly contagious virus generally causes gastrointestinal symptoms like vomiting, nausea, diarrhea and stomach pain.