Can cytomegalovirus infections be fatal?

Usually not: Cytomegalovirus (CMV) is an infection that can cause flu-like symptoms in healthy individuals & it doesn't require treatment. If you are immune-suppressed, the infection may become more severe, requiring treatment. Antiviral agents may shorten the course of illness but will not cure it. There is no prevention for cmv. Once infected, the body develops antibodies so reinfection cannot occur.

Cytomegalovirus: Cytomegalovirus (CMV) is one of the herpesviruses.. CMV is a common infection that is usually harmless. Once CMV is in a person's body, it stays there for life. Most healthy children and adults infected with CMV have no symptoms and may not even know that they have been infected. Cmv can cause serious disease in people with a weakened immune system and in such instances could be fatal.