- Distribution of post vaccination side effects among study population by vaccine type, Saudi Arabia.
| Type of vaccine | Side effects | None | After 1st dose | After 2nd dose | After both doses | ||||
|---|---|---|---|---|---|---|---|---|---|
| n | (%) | n | (%) | n | (%) | n | (%) | ||
| Pfizer | Systemic side effects | ||||||||
| Headache | 1108 | (59.3) | 648 | (34.7) | 60 | (3.2) | 52 | (2.8) | |
| Fatigue | 1433 | (76.7) | 352 | (18.8) | 57 | (3.1) | 26 | (1.4) | |
| Fever | 1367 | (73.2) | 360 | (19.3) | 106 | (5.7) | 35 | (1.9) | |
| Chills and tremors | 1635 | (87.5) | 177 | (9.5) | 41 | (2.2) | 15 | (0.8) | |
| Joint pain | 1456 | (77.9) | 326 | (17.5) | 51 | (2.7) | 35 | (1.9) | |
| Muscle pain | 1142 | (61.1) | 592 | (31.7) | 70 | (3.7) | 64 | (3.4) | |
| Diarrhea | 1742 | (93.3) | 103 | (5.5) | 21 | (1.1) | 2 | (0.1) | |
| Nausea | 1676 | (89.7) | 154 | (8.2) | 27 | (1.4) | 11 | (0.6) | |
| Local SE | |||||||||
| Local pain | 888 | (47.5) | 826 | (44.2) | 45 | (2.4) | 109 | (5.8) | |
| Local edema | 1428 | (76.4) | 365 | (19.5) | 32 | (1.7) | 43 | (2.3) | |
| Local pain with touch | 560 | (30.0) | 1091 | (58.4) | 56 | (3.0) | 161 | (8.6) | |
| Itching | 1652 | (88.4) | 185 | (9.9) | 20 | (1.1) | 11 | (0.6) | |
| Axiliary lymphadenopathy | 1790 | (95.8) | 56 | (3.0) | 18 | (1.0) | 4 | (0.2) | |
| Local redness | 1561 | (83.6) | 255 | (13.7) | 27 | (1.4) | 25 | (1.3) | |
| Local bruising | 1714 | (91.8) | 128 | (6.9) | 16 | (0.9) | 10 | (0.5) | |
| Local hotness | 1378 | (73.8) | 409 | (21.9) | 31 | (1.7) | 50 | (2.7) | |
| AstraZeneca | Systemic side effects | ||||||||
| Headache | 272 | (41.1) | 370 | (55.9) | 8 | (1.2) | 12 | (1.8) | |
| Fatigue | 367 | (55.4) | 267 | (40.3) | 9 | (1.4) | 19 | (2.9) | |
| Fever | 218 | (32.9) | 414 | (62.5) | 7 | (1.1) | 23 | (3.5) | |
| Chills and tremors | 386 | (58.3) | 257 | (38.8) | 6 | (0.9) | 13 | (2.0) | |
| Joint pain | 394 | (59.5) | 246 | (37.2) | 11 | (1.7) | 11 | (1.7) | |
| Muscle pain | 312 | (47.1) | 328 | (49.5) | 10 | (1.5) | 12 | (1.8) | |
| Diarrhea | 582 | (87.9) | 70 | (10.6) | 7 | (1.1) | 3 | (0.5) | |
| Nausea | 513 | (77.5) | 142 | (21.5) | 3 | (0.5) | 4 | (0.6) | |
| Local SE | |||||||||
| Local pain | 284 | (42.9) | 343 | (51.8) | 5 | (0.8) | 30 | (4.5) | |
| Local edema | 491 | (74.2) | 158 | (23.9) | 6 | (0.9) | 7 | (1.1) | |
| Local pain with touch | 166 | (25.1) | 452 | (68.3) | 8 | (1.2) | 36 | (5.4) | |
| Itching | 568 | (85.8) | 87 | (13.1) | 4 | (0.6) | 3 | (0.5) | |
| Axillary lymphadenopathy | 629 | (95.0) | 28 | (4.2) | 3 | (0.5) | 2 | (0.3) | |
| Local redness | 551 | (83.2) | 100 | (15.1) | 4 | (0.6) | 7 | (1.1) | |
| Local bruising | 585 | (88.4) | 67 | (10.1) | 5 | (0.8) | 5 | (0.8) | |
| Local hotness | 466 | (70.4) | 179 | (27.0) | 3 | (0.5) | 14 | (2.1) | |