Flu Symptoms 2025 Adults. Watch out for these 2025 symptoms, from mild to emergency by lindsey leake as with covid, testing is the only way to confirm the presence of the influenza virus in your body. To avoid flu symptoms in 2025, you need a solid plan for health and prevention.
Check if you have flu. A sudden onset of fever over 38ยฐc (100.4ยฐf);
