Definition: one group of herpes viruses that infects humans and can cause a variety of clinical symptoms, including deafness or hearing impairment; infection with the virus may be either before or after birth. See also Etiology. About.com has an article on cytomegalovirus:
Cytomegalovirus (Congenital)
By Jamie Berke, About.com
Updated: December 03, 2008
About.com Health's Disease and Condition content is reviewed by our Medical Review Board
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