Characteristic/Category
Missing
All Participants
Unvaccinated (any vaccine)
Partially vaccinated (1 dose CoronaVac)
Vaccinated (2 doses CoronaVac)
Age 0 n= 1582 n= 421 n= 121 n= 1040
Median (IQR) 49 (39-57) 47 (38-57) 41 (37-54) 50 (40-58)
Age group 0 n= 1582 n= 421 n= 121 n= 1040
20-29, n(%) 84 (5) 27 (6) 14 (12) 43 (4)
30-39, n(%) 322 (20) 102 (24) 33 (27) 187 (18)
40-49, n(%) 426 (27) 104 (25) 37 (31) 285 (27)
50-59, n(%) 476 (30) 111 (26) 26 (21) 339 (33)
60+, n(%) 274 (17) 77 (18) 11 (9) 186 (18)
Sex 0 n= 1582 n= 421 n= 121 n= 1040
F, n(%) 1473 (93) 394 (94) 114 (94) 965 (93)
M, n(%) 109 (7) 27 (6) 7 (6) 75 (7)
Pregnant 1 n= 1472 n= 393 n= 114 n= 965
No, n(%) 1466 (100) 389 (99) 114 (100) 963 (100)
Yes, n(%) 6 (0) 4 (1) 0 (0) 2 (0)
Breastfeeding 1 n= 1472 n= 393 n= 114 n= 965
No, n(%) 1468 (100) 389 (99) 114 (100) 965 (100)
Yes, n(%) 4 (0) 4 (1) 0 (0) 0 (0)
Hospital 0 n= 1582 n= 421 n= 121 n= 1040
Hospital 15, n(%) 131 (8) 8 (2) 9 (7) 114 (11)
Hospital 18, n(%) 230 (15) 47 (11) 10 (8) 173 (17)
Hospital 23, n(%) 117 (7) 44 (10) 6 (5) 67 (6)
Hospital 24, n(%) 221 (14) 69 (16) 30 (25) 122 (12)
Hospital 26, n(%) 400 (25) 142 (34) 18 (15) 240 (23)
Hospital 29, n(%) 158 (10) 70 (17) 33 (27) 55 (5)
Hospital 7, n(%) 325 (21) 41 (10) 15 (12) 269 (26)
Hospital Location 0 n= 1582 n= 421 n= 121 n= 1040
Central, n(%) 582 (37) 124 (29) 49 (40) 409 (39)
Periphery, n(%) 1000 (63) 297 (71) 72 (60) 631 (61)
Occupation/Role in hospital 0 n= 1582 n= 421 n= 121 n= 1040
Other, n(%) 583 (37) 124 (29) 44 (36) 415 (40)
Nurse or Midwife, n(%) 591 (37) 171 (41) 56 (46) 364 (35)
Medical Doctor, n(%) 408 (26) 126 (30) 21 (17) 261 (25)
Household size 0 n= 1582 n= 421 n= 121 n= 1040
1-3, n(%) 589 (37) 151 (36) 47 (39) 391 (38)
4-5, n(%) 747 (47) 194 (46) 56 (46) 497 (48)
6+, n(%) 246 (16) 76 (18) 18 (15) 152 (15)
Any chronic condition 0 n= 1582 n= 421 n= 121 n= 1040
No, n(%) 938 (59) 220 (52) 78 (64) 640 (62)
Yes, n(%) 644 (41) 201 (48) 43 (36) 400 (38)
Smoking 0 n= 1582 n= 421 n= 121 n= 1040
Never smoked, n(%) 1522 (96) 407 (97) 116 (96) 999 (96)
Currently smokes, n(%) 46 (3) 11 (3) 4 (3) 31 (3)
Previously smoked, n(%) 14 (1) 3 (1) 1 (1) 10 (1)
Self-assessed health status 0 n= 1582 n= 421 n= 121 n= 1040
Excellent, n(%) 106 (7) 20 (5) 7 (6) 79 (8)
Very good, n(%) 122 (8) 23 (5) 8 (7) 91 (9)
Good, n(%) 1046 (66) 268 (64) 73 (60) 705 (68)
Fair, n(%) 276 (17) 93 (22) 30 (25) 153 (15)
Poor, n(%) 32 (2) 17 (4) 3 (2) 12 (1)
Influenza vaccine 2019-2020 0 n= 1582 n= 421 n= 121 n= 1040
Yes, n(%) 458 (29) 85 (20) 22 (18) 351 (34)
No, n(%) 1124 (71) 336 (80) 99 (82) 689 (66)
Previous PCR-confirmed COVID-19 infection before enrollment 0 n= 1582 n= 421 n= 121 n= 1040
No, n(%) 1334 (84) 253 (60) 99 (82) 982 (94)
Yes, n(%) 248 (16) 168 (40) 22 (18) 58 (6)
Anti-Spike Protein Serology test results at enrolment 59 n= 1523 n= 406 n= 113 n= 1004
Positive, n(%) 1337 (88) 344 (85) 90 (80) 903 (90)
Negative, n(%) 186 (12) 62 (15) 23 (20) 101 (10)
Anti-Nucleocapsid Protein Serology test results at enrolment 65 n= 1517 n= 405 n= 113 n= 999
Positive, n(%) 1240 (82) 329 (81) 84 (74) 827 (83)
Negative, n(%) 261 (17) 70 (17) 27 (24) 164 (16)
Unknown/Equivocal, n(%) 16 (1) 6 (1) 2 (2) 8 (1)
Seropositive at enrolment by either assay 0 n= 1582 n= 421 n= 121 n= 1040
Yes, n(%) 1423 (90) 363 (86) 97 (80) 963 (93)
No, n(%) 159 (10) 58 (14) 24 (20) 77 (7)
Time from receipt of second dose until start of person-time contribution 542 n= 1040 n= 0 n= 0 n= 1040
Median (IQR) 99 (74 - 112) days 99 (74 - 112) days