TABLE 6.

Incidence of congenital HCMV infection in relation to rate of maternal immunity^a

Location and dateb	No. of infants studied	% of infants with congenital HCMV infection	% of mothers with maternal immunity
Manchester, England, 1978	6,051	0.24	25
Aarhus-Viborg, Denmark, 1979	3,060	0.4	52
Hamilton, Canada, 1980	15,212	0.42	44
Halifax, Canada, 1975	542	0.55	37
Birmingham, Alabama (upper SES), 1981	2,698	0.6	80
Houston, Texas (upper SES), 1980	461	0.6	50
London, England, 1973	720	0.69	58
Houston, Texas (low SES), 1980	493	1.2	83
Abidjan, Ivory Coast, 1978	2,032	1.38	100
Sendai, Japan, 1970	132	1.4	83
Santiago, Chile, 1976	118	1.7	98
Helsinki, Finland, 1977	200	2.0	85
Birmingham, Alabama (low SES), 1980	1,412	2.2	85

^aFrom Stagno et al. (265), modified and used with permission.

^bSES, socieconomic status.