The Canadian Pandemic Influenza Plan for the Health Sector

G
Health Services: Clinical Care Guidelines and Tools
Table of Contents
Chapter 1. Clinical presentations of influenza: Case definition and
pathogenesis
1.1 Most Common Clinical Presentations . . . . . . . . . . . . . . . . . . 4
1.1.1 Adults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1.2 Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1.3 Special populations: High-risk Conditions . . . . . . . . . . . . 6
1.1.3.1 Pregnant women . . . . . . . . . . . . . . . . . . . . 7
1.1.3.2 Elderly adults in long term care facilities . . . . . . . . 8
1.1.4 Pre-existing co-morbidity. . . . . . . . . . . . . . . . . . . . . 8
1.1.4.1 Respiratory . . . . . . . . . . . . . . . . . . . . . . . 8
1.1.4.2 Cardiovascular . . . . . . . . . . . . . . . . . . . . . 8
1.1.4.3 Diabetes . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1.4.4 Immuno-deficient hosts . . . . . . . . . . . . . . . . 9
1.1.4.5 Other. . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.2 Complications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.2.1 Lower respiratory tract complications . . . . . . . . . . . . . . 10
1.2.2 Otitis media and conjunctivitis . . . . . . . . . . . . . . . . . . 11
1.2.3 Cardiovascular . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.2.4 Central Nervous System . . . . . . . . . . . . . . . . . . . . . 12
1.2.5 Muscular . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.2.6 Toxic Shock Syndrome . . . . . . . . . . . . . . . . . . . . . 13
1.2.7 Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 1.1. Patient factors which may delay recovery from influenza
infection and facilitate the development of influenzarelated
complications . . . . . . . . . . . . . . . . . . . . . . 13
Table 1.2. Complications of influenza . . . . . . . . . . . . . . . . . . . . 14
Table 1.3. Comparative features of pulmonary complications of influenza . 15
Annex G
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