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With cold and flu season ramping up, doctors are warning about the potential ‘quad-demic’—a combination of influenza, RSV, COVID-19 and norovirus. Meanwhile, the U.S. bans red dye number 3 due to health risk. Plus, Dr. Iris Gorfinkel hits us with “Quack Attack,” as she breaks down the week’s top health stories to keep you informed and prepared.

• The winter ‘quademic’? You may be sick with one of these 4 viruses