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Human immunodeficiency virus (HIV) (4) |
Severe acute respiratory illness (SARI) (4) |
Influenza-like illness (ILI) (2) |
South Africa (SA) (2) |
Adults (1) |
Age (1) |
Attributable fraction (AF) (1) |
Children (1) |
HIV infection (1) |
Hospitalization (1) |
Influenza (1) |
Influenza-associated hospitalization (1) |
National influenza vaccination policy (1) |
Patients (1) |
Risk factors (1) |
SARI epidemiology (1) |
Severe chronic respiratory illness (SCRI) (1) |
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