Flu Symptoms In Kids 2025. While many kids bounce back quickly, the flu can lead to more serious complications like pneumonia or dehydration. The flu is most prevalent in children, since they’ve had the least exposure to the virus, and kids younger than 5 are most likely to experience complications or be hospitalized.
Influenza (flu) is a very contagious viral infection that affects the air passages of the lungs. Check if you have flu.