Having a cold does not cause the Neocoronavirus Antigen test to show two bars, the Neocoronavirus Antigen test is only used to detect Neocoronavirus. The common cold is a mild, self-limiting infection of the upper respiratory tract that is not associated with the Neocoronavirus, and therefore does not cause the Neocoronavirus antigen test to show two bars. Neocoronavirus infection is characterized by fever, dry cough, and malaise, and some patients may have nasal congestion, runny nose, sore throat, decreased or loss of smell and taste, conjunctivitis, myalgia, and diarrhea. Patients with common cold may have symptoms such as throat discomfort, dryness, sneezing, runny nose and nasal congestion in the early stage. It is evident that there are patients with novel coronavirus infections that may have a similar clinical presentation to the common cold. If the new coronavirus antigen test shows two bars representing a positive antigen test, you may be infected with the new coronavirus. A positive antigen test should be notified to a nearby health facility immediately and transported to a healthcare facility with a fever clinic for nucleic acid testing as required. Nucleic acid testing is the definitive diagnosis of neocoronavirus infection.