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Table 1 Percentage of signs and symptom of influenza A (H1N1)v in confirmed cases

From: Intensive care adult patients with severe respiratory failure caused by Influenza A (H1N1)v in Spain

Fever (96%)
Cough (88%)
Myalgia (69%)
Headache (59%)
Sore throat (58%)
Sudden onset of symptoms (46%)
Malaise (30%)
  1. Source: Ministerio de Salud y Política Social [13].