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Table 2 Subjects with opsonic titer < 8 pre- and post-vaccination

From: The effect of age on the response to the pneumococcal polysaccharide vaccine

Serotype Pre-vaccination Opsonic titer<8 Post-vaccination Opsonic titer<8
  Adult (N = 24) n/(%) Elderly (N = 33) n/(%) Adult (N = 24) n/(%) Elderly (N = 33) n/(%)
4 17 (70.8%) 27 (81.8%) 1 (4.2%) 10 (30.3%)
6B 7 (29.2%) 11 (33.3%) 0 (0.0%) 0 (0.0%)
9V 7 (29.2%) 11 (33.3%) 1 (4.2%) 1 (3.0%)
14a 7 (29.2%) 7 (21.2%) 0 (0.0%) 2 (6.1%)
18C 4 (16.7%) 8 (24.2%) 0 (0.0%) 0 (0.0%)
19A 11 (45.8%) 17 (51.5%) 0 (0.0%) 4 (12.1%)
19F 12 (50.0%) 14 (42.4%) 0 (0.0%) 0 (0.0%)
23F 3 (12.5%) 7 (21.2%) 0 (0.0%) 0 (0.0%)
6A 12 (50.0%) 21 (63.6%) 1 (4.2%) 7 (21.2%)
  1. a For Pn 14 OPKA was done in a limited patients due to lack of sera {Adults (N = 10), Elderly (N = 20)}.