influenza (also known as the flu) is a contagious respiratory illness caused by flu viruses. it can cause mild to severe illness and at times can lead to death. the flu is different from a cold. the flu usually comes on suddenly. people who have the flu often feel some or all of these symptoms: • fever* or feeling feverish/chills • cough • sore throat • runny or stuffy nose • muscle or body aches • headaches • fatigue (tiredness) • some people may have vomiting and diarrhea though this is more common in children than adults. * it's important to note that not everyone with flu will have a fever. most people who get influenza will recover in a few days to less than two weeks but some people will develop complications (such as an ear infection) as a result of the flu. pneumonia bronchitis sinus and ear infections are examples of complications from flu. symptoms of flu are body ache fever fatigue sore throat cough etc. ear ache can be one the symptoms of flu.
what are the systems of the flu is ear ache one?