Table 2.

Participant Symptoms and Outcomes (n = 542)

Inpatient Participants (n = 542)
Vaccinated SARS-CoV-2 Positive (n = 140)aUnvaccinated SARS-CoV-2 Positive (n = 152)SARS-CoV-2 Negative (n = 250)
Symptoms, % (n)b
 Asymptomatic1.4(2)5.3(8)5.2(13)
 Symptomatic75.7(106)72.4(110)59.6(149)
 Unable to assess22.9(32)22.4(34)35.2(88)
Severity (30 d), % (n)c
 SARS-CoV-2 negative0.0(0)0.0(0)100.0(250)
 Mild13.6(19)9.9(15)0.0(0)
 Moderate65.7(92)69.7(106)0.0(0)
 Severe14.3(20)18.4(28)0.0(0)
 Death6.4(9)2.0(3)0.0(0)
Hospitalization duration (60 d), % (n)
 01.4(2)1.3(2)11.2(28)
 1–221.4(30)16.4(25)27.6(69)
 3–420.0(28)25.7(39)19.6(49)
 5–616.4(23)18.4(28)9.6(24)
 7–87.9(11)13.2(20)10.0(25)
 9+32.9(46)25.0(38)22.0(55)
Re-hospitalization (60 d), % (n)
 Yes43.6(61)30.3(46)25.2(63)
Inpatient Participants (n = 542)
Vaccinated SARS-CoV-2 Positive (n = 140)aUnvaccinated SARS-CoV-2 Positive (n = 152)SARS-CoV-2 Negative (n = 250)
Symptoms, % (n)b
 Asymptomatic1.4(2)5.3(8)5.2(13)
 Symptomatic75.7(106)72.4(110)59.6(149)
 Unable to assess22.9(32)22.4(34)35.2(88)
Severity (30 d), % (n)c
 SARS-CoV-2 negative0.0(0)0.0(0)100.0(250)
 Mild13.6(19)9.9(15)0.0(0)
 Moderate65.7(92)69.7(106)0.0(0)
 Severe14.3(20)18.4(28)0.0(0)
 Death6.4(9)2.0(3)0.0(0)
Hospitalization duration (60 d), % (n)
 01.4(2)1.3(2)11.2(28)
 1–221.4(30)16.4(25)27.6(69)
 3–420.0(28)25.7(39)19.6(49)
 5–616.4(23)18.4(28)9.6(24)
 7–87.9(11)13.2(20)10.0(25)
 9+32.9(46)25.0(38)22.0(55)
Re-hospitalization (60 d), % (n)
 Yes43.6(61)30.3(46)25.2(63)

Abbreviations: COVID-19, coronavirus disease 2019; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.

a

Vaccinated participants had completed a primary COVID-19 vaccine series (with or without a booster) ≥14 days before enrollment.

b

Participants were classified as symptomatic if they indicated ≥1 symptoms on FLU-PRO surveys administered within the first 14 days.

c

Severity was the maximum illness severity within 30 days. This outcome was only calculated among SARS-CoV-2-positive participants.

Table 2.

Participant Symptoms and Outcomes (n = 542)

Inpatient Participants (n = 542)
Vaccinated SARS-CoV-2 Positive (n = 140)aUnvaccinated SARS-CoV-2 Positive (n = 152)SARS-CoV-2 Negative (n = 250)
Symptoms, % (n)b
 Asymptomatic1.4(2)5.3(8)5.2(13)
 Symptomatic75.7(106)72.4(110)59.6(149)
 Unable to assess22.9(32)22.4(34)35.2(88)
Severity (30 d), % (n)c
 SARS-CoV-2 negative0.0(0)0.0(0)100.0(250)
 Mild13.6(19)9.9(15)0.0(0)
 Moderate65.7(92)69.7(106)0.0(0)
 Severe14.3(20)18.4(28)0.0(0)
 Death6.4(9)2.0(3)0.0(0)
Hospitalization duration (60 d), % (n)
 01.4(2)1.3(2)11.2(28)
 1–221.4(30)16.4(25)27.6(69)
 3–420.0(28)25.7(39)19.6(49)
 5–616.4(23)18.4(28)9.6(24)
 7–87.9(11)13.2(20)10.0(25)
 9+32.9(46)25.0(38)22.0(55)
Re-hospitalization (60 d), % (n)
 Yes43.6(61)30.3(46)25.2(63)
Inpatient Participants (n = 542)
Vaccinated SARS-CoV-2 Positive (n = 140)aUnvaccinated SARS-CoV-2 Positive (n = 152)SARS-CoV-2 Negative (n = 250)
Symptoms, % (n)b
 Asymptomatic1.4(2)5.3(8)5.2(13)
 Symptomatic75.7(106)72.4(110)59.6(149)
 Unable to assess22.9(32)22.4(34)35.2(88)
Severity (30 d), % (n)c
 SARS-CoV-2 negative0.0(0)0.0(0)100.0(250)
 Mild13.6(19)9.9(15)0.0(0)
 Moderate65.7(92)69.7(106)0.0(0)
 Severe14.3(20)18.4(28)0.0(0)
 Death6.4(9)2.0(3)0.0(0)
Hospitalization duration (60 d), % (n)
 01.4(2)1.3(2)11.2(28)
 1–221.4(30)16.4(25)27.6(69)
 3–420.0(28)25.7(39)19.6(49)
 5–616.4(23)18.4(28)9.6(24)
 7–87.9(11)13.2(20)10.0(25)
 9+32.9(46)25.0(38)22.0(55)
Re-hospitalization (60 d), % (n)
 Yes43.6(61)30.3(46)25.2(63)

Abbreviations: COVID-19, coronavirus disease 2019; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.

a

Vaccinated participants had completed a primary COVID-19 vaccine series (with or without a booster) ≥14 days before enrollment.

b

Participants were classified as symptomatic if they indicated ≥1 symptoms on FLU-PRO surveys administered within the first 14 days.

c

Severity was the maximum illness severity within 30 days. This outcome was only calculated among SARS-CoV-2-positive participants.

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