Influenza are the viral infection that attacks your respiratory system like nose , throat and lungs. It is also known as Flu . Symptoms are as follows , pain in body , there is cough it can be dry or phlegm. Whole body will be cold , dehydration , high fever , sweating etc. In nose you will feel congestion , runny nose or sneezing . Some of them experienced chest pressure , head congestion , nausea , sore throat etc. Organs affected like Whole body like nose , throat and lungs.