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A flu shot (or intranasal flu vaccine) are made from INFLUENZA viruses. The shot is the outer shell of the virus (which provides the markers we categorize as 'H' and 'N' types). The intranasal flu vaccine is an ATTENUATED or weakened virus which gives a minor infection giving immunity without illness.

The common cold is generally caused by ADENOVIRUSES or RHINOVIRUSES. These are both different from the influenza virus. In short, they are different pathogens and cause different illnesses.

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15y ago

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