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Although these two diseases are manifested by respiratory symptoms they differ on several points. The general symptoms such as fever and fatigue, are much more important during a flu. While the person who has a cold usually continues to work, the person with influenza is much more often absent from work for a few days, mainly because of the intensity of fatigue. Moreover fever is usually absent or very slight in a cold, so it can be much more variable during the flu, generally individuals with influenza have a higher fever. by cons, in the very sick, such as the elderly, fever may be absent. Other symptoms such as headache and abdominal pain are virtually absent during cold but often present in cases of influenza.

The viruses that cause colds and flu are transmitted by contact with hands or by droplets in the air during sneezing and coughing. To be wet or cold does not give a cold or the flu. Two simple preventive measures can avoid catching a cold or the flu: wash your hands often with warm soapy water and avoid touching eyes or nose. The number of viruses is higher occur when cold symptoms so you can transmit the virus before symptoms appear. Use paper tissues to be thrown away.