New Flu Symptoms 2025

New Flu Symptoms 2025. A sudden onset of fever over 38°c (100.4°f); But not all influenza is the same.

Here’s what to know about flu symptoms in 2025, how to tell if it’s something else, and how to protect yourself: Brits have been given an urgent health warning to book a gp appointment if their flu symptoms don’t clear up after seven days, amid what the nhs is calling potentially the.