: Why do you test negative on an antigen test with COVID-19 symptoms? Do you have flu? Not necessarily — here’s why No Comments Uncategorized COVID-19 isn’t the flu or common cold, yet their symptoms can be strikingly similar. COVID-19 isn’t the flu or common cold, yet their symptoms can be strikingly similar. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to print (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on WhatsApp (Opens in new window)