Influenza

Sites

  • Upper and lower respiratory tract
  • Heart--> myocarditis (rare)
  • Brain--> encephalitis (rare)
  • Systemic--> sepsis (rare)

Etiology

  • Common cause upper and lower respiratory infection

Risk Factors

  • No vaccination
  • Seasonal in North America Oct to April
  • Increase risk amongst old, young, pregnant
  • Chronic lung disease
  • Any chronic illness

Symptoms

  • Abrupt onset of myalgias, arthralgias, fever, chills, cough, runny nose, sore throat

Links