Latest Flu Symptoms 2024. With infection rates of flu, the jn.1 variant of covid and rhinovirus on the rise, we answer the key questions on symptoms and treatment What symptoms should be concerning to me after a flu shot?

Dehydration, wheezing, severe head and muscle aches and high fevers that are staying high, above 104, are the main symptoms driving people to the hospital, desai said. Symptoms of the flu come on quickly — often just one day after exposure to someone who was sick — and can be felt all over the body.