virus (1) mortalité (1) matériau (1) infection (1) hôpital (1) demande (offre et demande) (1) consultation (1) comparaison (1) ville (1) taux (1) Mexique (1) Mexico (1) Mortality (1) Comparison (1) Control (1) Care (1) Methods (1) Respiratory organs--Diseases (1) Pneumonia (1) Patients (1) Nosocomial infections (1) Mortality (1) Influenza (1) Infection (1) Hospital care (1) Methods (1) Influenza A virus (1) Patients (1) Hospital care (1)