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. Author manuscript; available in PMC: 2019 Oct 15.
Published in final edited form as: Vaccine. 2018 Sep 14;36(43):6424–6432. doi: 10.1016/j.vaccine.2018.08.032

Table 2.

Age group specific percentages of participants with hemagglutination inhibition antibody titers >1:40 for WHO-recommended influenza strains contained in trivalent study vaccines.

 TIV
 aTIV
 6 through  12 through  36 through  6 through  12 through  36 through
 11 months  35 months  71 months  11 months  35 months  71 months
HA dose (volume)  15 μg  15 μg  15 μg  7.5 μg + MF59  7.5μg + MF59  15 μg + MF59
 (0.5 ml)  (0.5 ml)  (0.5 ml)  (0.25 ml)  (0.25 ml)  (0.5 ml)
 N = 26  N = 34  N = 33  N = 30  N = 31  N = 38

A/California (H1N1)
HI Ab titer ≥40% Baseline 0.0% (0.0–13.2) 5.9% (0.72–19.7) 33.3% (18.0–51.8) 6.7% (0.82–22.1) 6.5% (0.79–21.4) 52.6% (35.8–69.0)
(95% CI) 28d post dose 1 3.8% (0.10–19.6) 14.7% (5.0–31.1) 63.6% (45.1–79.6) 70.0% (50.6–85.3) 87.1% (70.2–96.4) 92.1% (78.6–98.3)
28d post dose 2 73.1% (52.2–88.4) 94.1% (80.3–99.3) 97.0% (84.2–99.9) 100.0% (88.4–100.0) 100.0% (88.8–100.0) 100.0% (90.8–100.0)
Seroconversion 28d post dose 1 3.8% (0.10–19.6) 14.7% (5.0–31.1) 63.6% (45.1–79.6) 70.0% (50.6–85.3) 87.1% (70.2–96.4) 92.1% (78.6–98.3)
 from baseline 28d post dose 2 73.1% (52.2–88.4) 94.1% (80.3–99.3) 97.0% (84.2–99.9) 100.0% (88.4–100.0) 100.0% (88.8–100.0) 94.7% (82.3–99.4)
A/Victoria (H3N2)
HI Ab titer ≥40% Baseline 23.1% (9.0–43.7) 76.5% (58.8–89.3) 75.8% (57.7–88.9) 40.0% (22.7–59.4) 58.1% (39.1–75.5) 86.8% (71.9–95.6)
 (95% CI) 28d post dose 1 50.0% (29.9–70.1) 94.1% (80.3–99.3) 90.9% (75.7–98.1) 83.3% (65.3–94.4) 93.5% (78.6–99.2) 100.0% (90.8–100.0)
28d post dose 2 96.2% (80.4–99.9) 100.0% (89.7–100.0) 100.0% (89.4–100.0) 100.0% (88.4–100.0) 100.0% (88.8–100.0) 100.0% (90.8–100.0)
Seroconversion 28d post dose 1 50.0% (29.9–70.1) 91.2% (76.3–98.1) 72.7% (54.5–86.7) 83.3% (65.3–94.4) 87.1% (70.2–96.4) 97.4% (86.2–99.9)
 from baseline 28d post dose 2 100.0% (86.8–100.0) 100.0% (89.7–100.0) 87.9% (71.8–96.6) 96.7% (82.8–99.9) 96.8% (83.3–99.9) 86.8% (71.9–95.6)
B/Wisconsin
(Yamagata lineage)
HI Ab titer ≥40% Baseline 26.9% (11.6–47.8) 41.2% (24.7–59.3) 51.5% (33.5–69.2) 16.7% (5.6–34.7) 38.7% (21.9–57.8) 52.6% (35.8–69.0)
 (95% CI) 28d post dose 1 42.3% (23.4–63.1) 55.9% (37.9–72.8) 66.7% (48.2–82.0) 63.3% (43.9–80.1) 64.5% (45.4–80.8) 76.3% (59.9–88.6)
28d post dose 2 80.8% (60.7–93.5) 97.1% (84.7–99.9) 97.0% (84.2–99.9) 100.0% (88.4–100.0) 100.0% (88.8–100.0) 100.0% (90.8–100.0)
Seroconversion 28d post dose 1 19.2% (6.6–39.4) 35.3% (19.8–53.5) 54.6% (36.4–71.9) 50.0% (31.3–68.7) 54.8% (36.0–72.7) 55.3% (38.3–71.4)
 from baseline 28d post dose 2 57.7% (36.9–76.7) 79.4% (62.1–91.3) 78.8% (61.1–91.0) 100.0% (88.4–100.0) 90.3% (74.3–98.0) 89.5% (75.2–97.1)