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Table 2 Comparison of Hepatitis A Seroprevalence Rate by Age in the Tainan Area in Different Studies

From: Decrease in seroprevalence of Hepatitis A after the implementation of nationwide disposable tableware use in Taiwan

Study Wu et al., 1993[12] Liu et al., 1994[7] Wang et al., 2001[8] Current study
(Time) (1989-1991) (1992) (1998) (2005)
Age (years) Year of birth Case/Total Rate (%) Year of birth Case/Total Rate (%) Year of birth Case/Total Rate (%) Year of birth Case/Total Rate (%)
1-2 1987-1990 0/30 0.0 1990-1991 3/83 3.6 1996-1997 0/32 0.0    
3-4 1985-1988 1/32 3.1 1988-1989 2/70 2.9 1994-1995 0/59 0.0    
5-6 1983-1986 0/144 0.0 1986-1987 2/86 2.3 1992-1993 1/91 1.1    
7-8 1981-1984 5/268 1.9 1984-1985 3/82 3.7 1990-1991 1/124 0.8    
9-10 1979-1982 14/287 4.9 1982-1983 3/90 3.3 1988-1989 2/147 1.4    
11-12 1977-1980 19/315 6.0 1980-1981 3/73 4.1 1986-1987 0/74 0.0    
13-15 1974-1978 106/406 26.1 1977-1979 8/35 22.9 1983-1985 1/51 2.0    
16-19     1973-1976 17/28 60.7 1979-1982 2/41 4.9    
20-24     1968-1972 22/35 62.9 1974-1978 16/132 12.1 1981-1985 79/2580 3.1
25-29     1963-1967 26/37 70.2 1969-1973 16/44 36.4 1976-1980 855/5587 15.3
30-39     1953-1962 24/26 92.3 1959-1968 29/44 65.9 1966-1975 1574/3458 45.2
40-49     1943-1952 20/20 100.0 1949-1958 41/46 89.1 1956-1965 79/107 73.8
> 50     < 1942 25/25 100.0 < 1948 32/34 94.1 < 1955 5/8 62.5