Colds do not affect the Neocoronavirus antigen test. The antigen test for C. neoformans is specific, and because C. neoformans is different from the viruses that cause common fevers and colds, a cold or fever usually does not affect the C. neoformans antigen test results. However, antigen testing is only an aid to detecting C.N.C.P. and is not the basis for a definitive diagnosis of C.N.C.P. Instead, the preferred basis for diagnosing C.N.C.P. infection is nucleic acid testing. However, it should be noted that compared with the nucleic acid test, the sensitivity of the antigen test for C.pneumoniae is relatively low and is prone to false negatives in the early stages of C.pneumoniae infection, while its accuracy is relatively low and is prone to false positives. It is recommended that any discomfort should be treated by a doctor in a timely manner, and if there is a positive result in the CAPNA test, then a nucleic acid test should be conducted in a timely manner for review. Tip: “New coronavirus pneumonia” and “new coronavirus pneumonia” mentioned in this article were renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.