What Are The Flu Symptoms 2025. The cdc recommends annual flu vaccination for anyone over 6. Those intense symptoms are hallmarks of how the flu can cause widespread inflammation in the body, putting the “whole body in a stress state,” desai said.

The signs and symptoms of a cold usually peak within 2 to 3 days of infection, the cdc adds. 12, 2025, 8:01 pm utc.