Table 1.

Demographics, Serostatus, and Vaccinations for the Total Study Population and the Subsample of Participants With Pre- and Postvaccination Antibody Measurements

Study Population, Median (IQR) or No. (%)
CharacteristicTotal (n = 192)Pre- and Post-vaccine Antibody Results (n = 99)aPost-booster Antibody Results (n = 34)
Age, y37 (32–44)38 (32–46)40 (35–47)
Female sex131 (68)65 (66)21 (62)
Race/ethnicity
 Non-Hispanic and Black4 (2)3 (3)0 (0)
 Non-Hispanic and Asian9 (5)4 (4)2 (6)
 Non-Hispanic and White127 (66)63 (64)22 (64)
 Non-Hispanic and other, ≥2 races, or unidentified10 (5)9 (9)3 (9)
 Hispanic ethnicity of any race10 (5)4 (4)1 (3)
 Other ethnicity of any race12 (6)4 (4)4 (12)
 Unidentified ethnicity of any race5 (3)3 (3)1 (3)
 Unidentified race and ethnicity15 (8)11 (9)1 (3)
Total Ig antibody serostatus before vaccination
 Seronegative182 (95)93 (92)30 (88)
 Seropositive10 (5)6 (6)4 (12)
  At baseline visit5 (3)4 (4)3 (9)
  Occurred during follow-up5 (3)2 (2)1 (3)
Vaccinations received
 None1 (0.5)NANA
 2 doses140 (73)50 (51)NA
 3 doses51 (27)49 (49)34 (100)
Study Population, Median (IQR) or No. (%)
CharacteristicTotal (n = 192)Pre- and Post-vaccine Antibody Results (n = 99)aPost-booster Antibody Results (n = 34)
Age, y37 (32–44)38 (32–46)40 (35–47)
Female sex131 (68)65 (66)21 (62)
Race/ethnicity
 Non-Hispanic and Black4 (2)3 (3)0 (0)
 Non-Hispanic and Asian9 (5)4 (4)2 (6)
 Non-Hispanic and White127 (66)63 (64)22 (64)
 Non-Hispanic and other, ≥2 races, or unidentified10 (5)9 (9)3 (9)
 Hispanic ethnicity of any race10 (5)4 (4)1 (3)
 Other ethnicity of any race12 (6)4 (4)4 (12)
 Unidentified ethnicity of any race5 (3)3 (3)1 (3)
 Unidentified race and ethnicity15 (8)11 (9)1 (3)
Total Ig antibody serostatus before vaccination
 Seronegative182 (95)93 (92)30 (88)
 Seropositive10 (5)6 (6)4 (12)
  At baseline visit5 (3)4 (4)3 (9)
  Occurred during follow-up5 (3)2 (2)1 (3)
Vaccinations received
 None1 (0.5)NANA
 2 doses140 (73)50 (51)NA
 3 doses51 (27)49 (49)34 (100)

Abbreviations: Ig, immunoglobulin; NA, not applicable.

aPost-vaccine: after at least 1 dose.

Table 1.

Demographics, Serostatus, and Vaccinations for the Total Study Population and the Subsample of Participants With Pre- and Postvaccination Antibody Measurements

Study Population, Median (IQR) or No. (%)
CharacteristicTotal (n = 192)Pre- and Post-vaccine Antibody Results (n = 99)aPost-booster Antibody Results (n = 34)
Age, y37 (32–44)38 (32–46)40 (35–47)
Female sex131 (68)65 (66)21 (62)
Race/ethnicity
 Non-Hispanic and Black4 (2)3 (3)0 (0)
 Non-Hispanic and Asian9 (5)4 (4)2 (6)
 Non-Hispanic and White127 (66)63 (64)22 (64)
 Non-Hispanic and other, ≥2 races, or unidentified10 (5)9 (9)3 (9)
 Hispanic ethnicity of any race10 (5)4 (4)1 (3)
 Other ethnicity of any race12 (6)4 (4)4 (12)
 Unidentified ethnicity of any race5 (3)3 (3)1 (3)
 Unidentified race and ethnicity15 (8)11 (9)1 (3)
Total Ig antibody serostatus before vaccination
 Seronegative182 (95)93 (92)30 (88)
 Seropositive10 (5)6 (6)4 (12)
  At baseline visit5 (3)4 (4)3 (9)
  Occurred during follow-up5 (3)2 (2)1 (3)
Vaccinations received
 None1 (0.5)NANA
 2 doses140 (73)50 (51)NA
 3 doses51 (27)49 (49)34 (100)
Study Population, Median (IQR) or No. (%)
CharacteristicTotal (n = 192)Pre- and Post-vaccine Antibody Results (n = 99)aPost-booster Antibody Results (n = 34)
Age, y37 (32–44)38 (32–46)40 (35–47)
Female sex131 (68)65 (66)21 (62)
Race/ethnicity
 Non-Hispanic and Black4 (2)3 (3)0 (0)
 Non-Hispanic and Asian9 (5)4 (4)2 (6)
 Non-Hispanic and White127 (66)63 (64)22 (64)
 Non-Hispanic and other, ≥2 races, or unidentified10 (5)9 (9)3 (9)
 Hispanic ethnicity of any race10 (5)4 (4)1 (3)
 Other ethnicity of any race12 (6)4 (4)4 (12)
 Unidentified ethnicity of any race5 (3)3 (3)1 (3)
 Unidentified race and ethnicity15 (8)11 (9)1 (3)
Total Ig antibody serostatus before vaccination
 Seronegative182 (95)93 (92)30 (88)
 Seropositive10 (5)6 (6)4 (12)
  At baseline visit5 (3)4 (4)3 (9)
  Occurred during follow-up5 (3)2 (2)1 (3)
Vaccinations received
 None1 (0.5)NANA
 2 doses140 (73)50 (51)NA
 3 doses51 (27)49 (49)34 (100)

Abbreviations: Ig, immunoglobulin; NA, not applicable.

aPost-vaccine: after at least 1 dose.

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