Flu 2024 Symptoms. Learn about the common and rare side effects of the flu vaccine, and how to get it if you are allergic to eggs. Learn the symptoms, timing, and testing tips for differentiating between the four respiratory viruses that circulate in winter.

On september 20, 2024, the food and drug administration (fda) approved the nasal spray flu vaccine, flumist, for self or caregiver administration. Learn how to tell the difference between the flu and a cold, and when to see a doctor.