Antigen, Nucleic acid, and Antibody detection are detection methods at different times after virus infection.
Neutralizing antibody is an evaluation and monitoring method to evaluate the effectiveness of vaccines after
injection of vaccines by uninfected patients; Monitor whether recovered patients are immune to the virus, etc.
Neutralizing antibodies are antibodies that block virus invasion. Antibodies such as IgG/IgM are antibodies produced by the body after virus invasion.