Table 2 Seroprevalence of SARS-COV-2 in first (general population) and second phases by city
| City | Phases | Number, n/N |
Crude (95% CI) |
Weighted (95% CI)a |
Adjusted for test performance I (95% CI)b |
Adjusted for test performance II (95% CI)c |
|---|---|---|---|---|---|---|
| Ahvaz | First phase | 8/100 | 8.0 (3.5-15.5) | 7.9 (2.2-15.9) | 9.4 (0.7-21.6) | 8.7 (0.6-20.1) |
| Second phase | 57/393 | 14.5 (11.2-18.4) | 17.7 (5.1-30.3) | 20.4 (0.5-40.2) | 18.9 (0.6-37.2) | |
| Ardabil | First phase | 11/87 | 12.6 (6.5-21.5) | 14.8 (3.9-32.3) | 20.0 (3.2-46.8) | 18.6 (3.0-43.5) |
| Second phase | 115/384 | 29.9 (25.4-34.8) | 28.8 (22.8-34.8) | 34.1 (24.2-44.0) | 31.7 (22.7-40.7) | |
| Babol | First phase | 19/91 | 20.9 (13.1-30.7) | 16.4 (9.6-24.6) | 22.4 (11.9-35.1) | 20.8 (11.1-32.6) |
| Second phase | 100/383 | 26.1 (21.8-30.8) | 23.1 (14.3-31.8) | 27.0 (16.6-37.4) | 25.1 (15.3-34.9) | |
| Gorgan | First phase | 41/125 | 32.8 (24.7-41.8) | 30.4 (22.3-39.7) | 43.9 (31.4-58.3) | 40.9 (29.2-54.2) |
| Second phase | 62/330 | 18.8 (14.7-23.4) | 22.4 (10.7-34.1) | 26.1 (6.9-45.4) | 24.3 (6.9-41.7) | |
| Hamedan | First phase | 8/108 | 7.4 (3.5-15.2) | 7.2 (2.9-12.9) | 8.3 (1.6-17.0) | 7.7 (1.5-15.8) |
| Second phase | 116/391 | 29.7 (25.2-34.5) | 27.5 (21.7-33.3) | 32.4 (22.3-42.6) | 30.1 (20.7-39.6) | |
| Kerman | First phase | 10/108 | 9.3 (4.5-16.4) | 7.1 (3.2-12.6) | 8.2 (2.2-16.6) | 7.7 (2.1-15.4) |
| Second phase | 64/355 | 18.0 (14.2-22.4) | 14.5 (9.3-19.7) | 16.0 (10.7-21.4) | 14.9 (9.8-20.0) | |
| Kermanshah | First phase | 14/133 | 10.6 (5.9-17.1) | 13.1 (5.3-21.9) | 17.3 (5.3-30.9) | 16.1 (4.9-28.8) |
| Second phase | 92/389 | 23.6 (19.5-28.2) | 24.1 (17.4-30.7) | 28.3 (15.9-40.7) | 26.3 (14.5-38.1) | |
| Mashhad | First phase | 21/176 | 11.9 (7.5-17.6) | 11.5 (7.1-16.8) | 14.8 (8.2-23.1) | 13.8 (7.6-21.5) |
| Second phase | 171/691 | 24.7 (21.6-28.1) | 24.7 (17.7-31.7) | 35.2 (23.6-46.8) | 32.7 (21.2-44.2) | |
| Qom | First phase | 48/108 | 44.4 (34.8-54.3) | 39.9 (26.0-56.4) | 58.5 (37.2-83.9) | 54.4 (34.6-78.0) |
| Second phase | 114/385 | 29.6 (25.1-34.4) | 27.2 (18.1-36.2) | 29.8 (24.0-35.6) | 32.0 (25.9-38.2) | |
| Sanandaj | First phase | 4/96 | 4.2 (1.1-10.3) | 2.7 (0.6-5.7) | 1.7 (0.0-6.0) | 1.6 (0.0-5.6) |
| Second phase | 117/388 | 30.1 (25.6-35.0) | 27.9 (22.2-33.6) | 33.0 (27.3-38.6) | 30.7 (25.3-36.1) | |
| Sari | First phase | 22/175 | 12.6 (8.0-18.4) | 11.4 (6.9-16.4) | 14.7 (7.8-22.4) | 13.7 (7.3-20.8) |
| Second phase | 74/400 | 18.5 (14.8-22.7) | 15.9 (9.0-22.7) | 17.8 (11.0-24.5) | 16.5 (9.8-23.2) | |
| Shiraz | First phase | 10/124 | 8.1 (3.9-15.0) | 6.6 (2.6-11.20 | 7.3 (1.2-14.5) | 6.8 (1.1-13.5) |
| Second phase | 90/485 | 18.6 (15.2-22.3) | 18.1 (13.1-23.2) | 25.4 (13.6-37.1) | 23.6 (12.5-34.7) | |
| Tabriz | First phase | 8/103 | 7.8 (3.4-14.7) | 5.4 (1.7-10.2) | 5.6 (0.0-13.0) | 5.2 (0.0-12.1) |
| Second phase | 180/485 | 37.1 (32.8-41.6) | 32.8 (24.7-40.8) | 39.2 (33.0-45.5) | 36.5 (30.8-42.2) | |
| Tehran | First phase | 191/1572 | 12.1 (10.6-13.9) | 12.4 (10.6-14.5) | 16.3 (13.5-19.5) | 15.1 (12.5-18.2) |
| Second phase | 271/1181 | 22.9 (20.6-25.4) | 24.9 (20.0-29.8) | 35.5 (27.1-43.9) | 33.0 (25.0-41.0) | |
| Urmia | First phase | 8/101 | 7.9 (3.5-15.0) | 8.4 (1.9-17.6) | 10.0 (0.2-24.3) | 9.3 (0.2-22.6) |
| Second phase | 66/389 | 17.0 (13.4-21.1) | 18.4 (12.4-24.3) | 20.8 (9.0-32.5) | 19.3 (8.2-30.4) | |
| Zahedan | First phase | 8/105 | 7.6 (3.3-14.5) | 9.7 (3.3-16.9) | 12.1 (2.3-23.3) | 11.3 (2.1-21.6) |
| Second phase | 75/382 | 19.6 (15.8-24.0) | 16.2 (9.8-22.6) | 18.0 (7.6-28.4) | 16.7 (7.3-26.1) |