Symptoms Of The Flu 2024. Flu can cause mild to severe illness, and at times can lead to death. The flu is an illness you get from the influenza virus.
It can cause mild to severe illness, and at times can lead to death. 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.