Influenza complication are sometimes serious which may lead to fatal cases. Influenza associated acute encephalopathy, myocarditis, myopathy are among a few of them. In non complicated influenza, influenza virus attack only the epithelial cells of the lining of the respiratory tract causing some local or systemic general responses such as fever, cough, headache. However when in patient with weaken immunity such as children, eldery, pregnant women, immunocompromised patient, influenza virus may find the way to attack different organs, or just simply trigger an over-response to viral attack leading to cell injury, cell death, organ failure and may eventually death. Keeping good personal hygiene is essential to prevent getting infection. seek medical advist at once if you have flu-like symptoms. A influenza antigen test or PCR tast maybe required for confirmation of diagnosis. Stay at home, taking some rest and following doctor's advice can prevent the body from getting worse.