Influenza
Mild or Uncomplicated Illness

Mild or Uncomplicated Illness

Definition

Typical symptoms (with no shortness of breath and little change in chronic health conditions):

  • Fever (although not everyone with influenza especially at the extremes of age will have a fever)
  • Cough
  • Sore throat
  • Rhinorrhea 
  • Muscle pain
  • Headache
  • Chills
  • Malaise
  • Sometimes diarrhea and vomiting
  • Asthma and other chronic pulmonary disease
  • Cardiovascular disease
  • Malignancy
  • Chronic renal insufficiency
  • Diabetes mellitus and other metabolic diseases
  • Hemoglobinopathies
  • Immunosuppression or immunodeficiency
  • Neurologic disease and neurodevelopmental disorders that compromise handling of respiratory secretions
  • Age <5 years old and >65 years old
  • Individuals living in chronic care facilities
  • Pregnant women and women up to 4 weeks post partum regardless of how pregnancy ended
  • Individuals <18 years old on chronic aspirin therapy
  • Obesity
  • Aboriginal people

≤ 48 hours of symptom onset

  • Requires renal adjustment
  • Initiate immediately if patient has above risk factors
  • A longer duration may be considered in severely ill or immunocompromised patients

> 48 hours since symptom onset

No risk factors: Antiviral therapy is not recommended

WITH above risk factors: Antiviral therapy may be considered