yes a person can have more than one viral infection at the same time. true influenza is so miserable that how would you even know if you also had a common cold? diagnosed early and by laboratory confirmation (there is a rapid flu test) the course of influenza can be shortened by using a drug called tamiflu. colds of course have no specific treatment. they will last about a week.
is it possible to have both a cold and a flu at the same time? . there are symptoms from both when i looked at the cold or flu article.