Table 1.

Study population characteristics. Statistics: frequency (%) or median (interquartile range).

Factor	Statistics
Age (years)	50 (41–57)
Sex
M	279 (41.6)
F	391 (58.4)
Virus SARS-CoV-2 IgG_BAU	205.2 (106.3–454.9)
Virus SARS-CoV-2 IgG AU	1444.8 (748.7–3203.5)
Distance from booster dose (days)	42 (34–74)
Vaccine type
Unvaccinated	3 (0.4)
Vaxzevria (Astrazeneca)	493 (73.6)
Comirnaty (Pfizer)	142 (21.2)
Spikevax (Moderna)	16 (2.4)
Combined (Vaxzevria + Comirnaty or Spikevax)	16 (2.4)
Vaccinated	667 (99.6)
Contact with a SARS-CoV-2-positive subject	76 (11.3)
Confirmed SARS-CoV-2 infection	19 (2.8)