Direct Saliva Real-time Polymerase Chain Reaction Assay Shows Low Birth Prevalence of Congenital Cytomegalovirus Infection in Urban Western India.

Background: Congenital cytomegalovirus (cCMV) infection is the leading infectious cause of mental retardation, developmental delay and sensorineural deafness. Nonprimary infection plays a major role in transmission of this infection in countries with high maternal seroprevalence. Noninvasive sampling and testing is a useful alternative to traditional methods of laboratory detection of congenital CMV infection.