cmv virus definition
A. CMV or cytomegalovirus (http://en.wikipedia.org/wiki/Cytomegalovirus) is a virus that can cause disease (i.e. infectious mononucleosis, http://en.wikipedia.org/wiki/Infectious_mononucleosis) in everyone, not only pregnant women.n adults, CMV may be serious and can cause blindness or a mononucleosis-type infection. CMV mononucleosis is the most common form of CMV infection, and it occurs at about 25 to 30 years of age.