Table 1

Rubella virus seronegativity rates and GMTs for primiparous women 9 to 22 years after vaccination in the third grade of junior high school

Time (yr) after vaccinationAge (yr)Sample sizeNo. of seronegative women% Seronegativity (95% CI)GMT (IU/ml) (95% CI)
924142117.7 (3.3–12.1)69.9 (57.8–81.9)
1025323247.4 (4.6–10.3)70.3 (62.2–78.4)
1126576305.2 (3.4–7.0)63.6 (58.3–69.0)
1227956656.8 (5.2–8.4)65.6 (60.8–70.4)
13281,445946.5 (5.2–7.8)66.6 (62.8–70.4)
14291,8321095.9 (4.9–7.0)66.8 (63.5–70.1)
15301,8991196.3 (5.2–7.4)68.1 (64.7–71.6)
16311,9831376.9 (5.8–8.0)68.2 (64.8–71.7)
17321,682915.4 (4.3–6.5)67.5 (63.9–71.1)
18331,455956.5 (5.3–7.8)64.0 (60.3–67.8)
1934886748.4 (6.5–10.2)59.3 (54.8–63.7)
2045560427.5 (5.3–9.7)59.7 (54.8–64.6)
2136258176.6 (3.6–9.6)64.4 (56.4–72.4)
22379399.7 (3.7–15.7)54.8 (46.8–62.9)
Total14,0909176.5 (6.1–6.9)65.9 (64.7–67.1)