Influenza is a viral infection characterized by the abrupt onset of fever, sore throat, cough, headache, muscle aches, runny nose, and general malaise. The most common route of infection is through the respiratory tract. It is usually a self-limiting disease with recovery in two to seven days. However, it can be a serious illness to the weak and frail elders, especially those with chronic diseases, and may be complicated by bronchitis, pneumonia, and even death in the most serious cases.

With the heightened awareness of swine flu cases, the Department of Community Health maintains updates on possible flu cases and information specific to Michigan. Further, Michigan receives frequent updates from the Centers for Disease Control and is working with local health departments to monitor the situation and immediately follow up on any suspected cases.