National Institute of Allergy and Infectious Diseases (U.S.)2007-03-272007-03-272005-09National Institute of Allergy and Infectious Diseases (U.S.) (2005). Is it a cold or the flu?. Retrieved November 20, 2006, from National Institute of Allergy and Infectious Diseases web site: http://www.niaid.nih.gov/Publications/cold/sick.pdfhttps://hdl.handle.net/1805/7421 page.Information sheet comparing the common cold with the flu.90888 bytesapplication/pdfen-USinfluenzaflusymptomstreatmentpreventioncomplicationscoldInfluenza.Cold (Disease).Other