It’s a term used to describe annual outbreaks which occur in late fall and winter climate regions for example.Majority of people who suffer and die from seasonal influenza are the elderly.These outbreaks usually last for 3 months, and spread through a community in a 2-3 week peak period.Where healthy adults this last for about 6-8 days of clinical symptoms – sudden fever, general fatigue, headache, or muscle aches, dry/unproductive cough, sore throat and runny/stuffy nose.More serious complications such as bacterial pneumonia, ear infections, sinus infections, dehydration and worsening of chronic medical conditions like asthma, diabetes and congestive heart failure.