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Table 2 Enrolled subjects with post-vaccination (S2) titers ≥1:40

From: Factors associated with maintenance of antibody responses to influenza vaccine in older, community-dwelling adults

  H1N1 H3N2 B
(N=126) (N=407) (N=354)
% (n) % (n) % (n)
Age (Years) 62 (57,74) 65 (58,75) 66 (58,76)
Sex (Female) 71% (90) 64% (260) 61% (215)
Race (White) 96% (121) 96% (390) 96% (341)
Recent illness or stressor (Yes) 32% (40) 35% (143) 39% (139)
Stress (Yes) 10% (12) 8% (34) 9% (32)
Time from S1 to S3 (days) (mean, IQR) 257 (251,266) 257 (250,264) 257 (251, 264)