Cytomegalovirus antibody positivity is divided into two cases, one is IgG antibody positivity and the other is IgM antibody positivity. 1. Positive IgG antibody: Positive IgG antibody generally indicates that the patient has been infected with cytomegalovirus, because IgG antibody exists as long as the patient has been infected with cytomegalovirus, so the positive IgG antibody cannot determine whether the patient is currently infected with cytomegalovirus. 2. Positive IgM antibody: IgM antibody will only be positive in the acute stage of cytomegalovirus infection, so if IgM antibody is positive, it indicates that the patient is being infected by cytomegalovirus at this time. Cytomegalovirus antibody positivity can be divided into IgG antibody positivity and IgM antibody positivity, and it is recommended to confirm the diagnosis and treatment according to the symptoms under the guidance of the doctor.