Influenza is a viral infection that affects mainly the nose, throat, bronchi and, occasionally, lungs. Infection usually lasts for about a week, and is characterized by sudden onset of high fever, aching muscles, headache and severe malaise, non-productive cough, sore throat and rhinitis.
sábado, 12 de junio de 2010
Pandemic Influenza Vaccine Policy — Considering the Early Evidence
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