Variable Healthy individuals Uninfected two-dose vaccinees Uninfected three-dose vaccinees Uninfected four-mixed-dose vaccinees
Number of participants 10 8 10 4
Age (years), median (range) 41 (33-63) 35 (32-50) / 31 (28-51)
Sex at birth, female 7 (70%) 7 (88%) / 2 (50%)
COVID vaccination history
Inactivated vaccines 0 8 (100%) 10 (100%) 0
Ad5-nCOV (adenovirus vector vaccine) 0 0 0 0
dNS1-RBD 0 0 0 0
Recombinant Fusion Protein 0 0 0 0
Three-dose inactivated vaccines plus one-dose dNS1-RBD
0
0
0
1 (25%)
Three-dose inactivated vaccines plus one-dose Ad5-nCOV
0
0
0
2 (50%)
Three-dose inactivated vaccines plus one-dose Recombinant Fusion Protein
0
0
0
1 (25%)
Time between last vaccination and serum sampling N/A 2-3 weeks 3-5 months 2-4 weeks