Influenza

• Children under 5 years of age (especially under 2 years of age)

• Aboriginal Peoples

• Asthma and other chronic pulmonary disease, including dysplasia, cystic fibrosis, chronic bronchitis and emphysema

• Cardiovascular disease (excluding isolated hypertension; including congenital and acquired heart disease such as congestive heart failure)

• Malignancy

• Chronic renal insufficiency
  Diabetes mellitus and other metabolic diseases

• Hemoglobinopathies such as sickle

cell disease

• Immunosuppression or immunodeficiency due to disease, or iatrogenic due to medication

• Neurologic disease and neurodevelopment disorders that compromise handling of respiratory secretions (cognitive neuromuscular disorders, cerebral palsy, metabolic disorders)

• Residents of chronic care facilities

• Pregnant adolescents and adolescents up to 4 weeks post part regardless of how the pregnancy ended

• < 18 years of age and on chronic aspirin therapy

• Obesity with BMI > of a BMI > 3 z-scores above the mean for age and gender