Both IgG and IgM are immunoglobulins, which are antibodies that are diagnostic for viral infections, and a positive result for both is considered infection with New Crown pneumonia. In general, a positive IgM test indicates that the patient may have recently had a neointimal pneumonia infection, usually detectable 3-7 days after the onset of the disease, while a positive IgG test indicates that a neointimal pneumonia infection has existed and is now in the recovery phase, usually starting to rise 7-9 days after the infection, and the retention time of the antibody is relatively long, with a high detection rate within 7-14 days. Both are difficult to detect early in the course of the disease, and only when they show double positivity, i.e. both IgG and IgM, are they more significant for clinical diagnosis. The diagnosis of neocoronavirus pneumonia can be confirmed by positive serum IgM and IgG antibodies, or by a 4-fold or higher increase in serum IgG antibodies in the recovery phase compared to the acute phase. However, there is a certain degree of false positivity in the neo-coronavirus antibody test. If a patient tests positive for both IgG and IgM antibodies to neo-coronavirus, the diagnosis still needs to be made by a medical professional in conjunction with the patient’s clinical presentation, epidemiological history, and nucleic acid test results. Patients diagnosed with Neoconiosis should be promptly isolated in a specialized hospital and treated symptomatically.
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