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[Frequency of acute cytomegalovirus infections among people of differing age groups].

The incidence of cytomegalovirus (CMV) infection was assessed from the presence of anti-CMV IgM in the sera of 1312 children of different age and 250 adults by the Labsystems enzyme immunoassay kit. CMV-specific IgM are rare in newborns (1.3%), but their incidence increases to 5% during the first year of life. These antibodies occur in 5-6% preschool and schoolchildren. The incidence of acute CMV infection is the highest in adults: 15%.