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Table 1 Incidence of congenital CMV infection by era in Sapporo, Japan

From: Chronological changes of incidence and prognosis of children with asymptomatic congenital cytomegalovirus infection in Sapporo, Japan

Era

No. of neonates screened

No. of congenital CMV infection (%)

No. of symptomatic congenital CMV infection (%)

1977–1981

3,084

14 (0.45%)

1 (0.032%)

1982–1985

2,814

10 (0.36%)

1 (0.036%)

1986–1990

2,097

7 (0.33%)

1 (0.048%)

1991–1996

1,898

3 (0.16%)

1 (0.053%)

1997–2002

2,045

3 (0.15%)

1 (0.049%)

1977–2002

11,938

37 (0.31%)

5 (0.042%)