Table 2 Geometric means of responses and fold reduction in paired samples of Omicron responder subsets.

From: Diminished neutralization responses towards SARS-CoV-2 Omicron VoC after mRNA or vector-based COVID-19 vaccinations

Paired responders in sample cohort (n; [% of total n per vaccination scheme])

GMT (95% CI) of paired responders across indicated variants

B.1

Beta B.1.351

Delta B.1.617.2

Omicron BA.1

One-dose Ad26.CoV2.S * (1; [4.4])

na

na

na

na

Two-dose AZD1222 (14; [56.0])

155.80

(96.60–251.20)

40.98

(23.66–70.97)

83.52

(49.68–140.40)

14.39

(8.92–23.23)

First dose AZD1222, second dose BNT162b2 (21; [84.0])

791.90

(558.90–1122.00)

132.0

(87.94–198.00)

469.50

(316.00–697.50)

49.72

(34.00–72.71)

First dose AZD1222, second dose mRNA-1273 (21; [87.5])

1098.00

(793.80–1518.00)

284.20

(183.20–440.90)

760.70

(513.60–1127.00)

78.68

(54.36–113.90)

Two-dose mRNA-1273 (24; [100.0])

453.80

(351.2–586.4)

85.48

(55.45–131.80)

393.50

(284.4–544.4)

29.50

(21.58–40.33)

Two-dose BNT162b2 T1 (11; [47.8]) **

406.80

(300.90–550.00)

54.41

(32.19–91.99)

371.00

(243.30–565.50)

18.21

(11.83–28.03)

Two-dose BNT162b2 T2 (13; [56.2]) **

98.77

(68.41–142.60)

33.07

(21.25–51.45)

82.63

(53.60–127.4)

14.22

(9.74–20.75)

Paired responders in sample cohort (n; [% of total n per vaccination scheme])

Fold reduction in GMT of paired responders across indicated variants

B.1

Beta B.1.351

Delta B.1.617.2

Omicron BA.1

One-dose Ad26.CoV2.S * (1; [4.4])

na

na

na

Two-dose AZD1222 (14; [56.0])

3.80

1.87

10.83

First dose AZD1222, second dose BNT162b2 (21; [84.0])

6.00

1.69

15.93

First dose AZD1222, second dose mRNA-1273 (21; [87.5])

3.86

1.44

13.96

Two-dose mRNA-1273 (24; [100.0])

5.31

1.15

15.38

Two-dose BNT162b2 T1 (11; [47.8]) **

7.48

1.10

22.34

Two-dose BNT162b2 T2 (13; [56.2]) **

2.99

1.20

6.95

  1. *Only one individual showed detectable neutralization titers in the Omicron BA.1 assay.
  2. **Two-dose BNT162b2 T1 and two-dose BNT162b2 T2 are paired longitudinal samples.