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Cold and Flu
Cold and Flu Learning Center

Cold and Flu
Overview Colds (common colds) and the flu (influenza) are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Colds typically are confined to the upper respiratory system - the...
The flu is a contagious infection of the nose, throat, and lungs caused by the influenza virus.
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The common cold generally involves a runny nose, nasal congestion, and sneezing. You may also have a...
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Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through...
read more