Elfie Helaina

2024 Flu Symptoms And Duration In India. Flu can cause mild to severe illness, and at times can lead to death. The initial symptoms are similar to the flu, but they can rapidly advance (over 24 to 48 hours) to encephalitis, coma and death.

If you get rsv, on the other hand, it may take 4 to 6 days before symptoms. It can cause mild to severe illness.