It is a common virus. Once infected, your body retains the virus for life. Most people do not know they have CMV because it rarely causes problems in healthy people. If you are pregnant or have a weak immune system, infection with CMV can be a concern.
The examination should be conducted in children or adults with high body temperature accompanied by enlarged lymph nodes, or in some other cases that may raise the doctor’s suspicion of infection with the cytomegalovirus.