This tends to spread rapidly in seasonal epidemics.Infection of this usually lasts for about a week,and is characterized by a sudden outbreak of high fever,aching muscles,headache,severe cough,and sore throat.This is transmitted easily from person to person through small particles produced when infected people cough or sneeze.Most infected people recover within one to two weeks without requiring medical treatment.However,this can be serious,even deadly,for elderly people,new born babies and people with certain chronic illnesses.The best way to prevent this is to get a vaccination.Getting plenty of sleep,being physically active,managing your stress,drinking plenty of fluids and eating nutritious food are other key prevention measures.As the viruses causing this can be removed by soap,frequent hand washing reduces the risk of infection.