Table 2.
COVID-19 vaccine side effects by manufacturer.
| All Participants N = 6966 |
Pfizer N = 3486 |
Moderna N = 2857 |
J&J N = 623 |
|
|---|---|---|---|---|
| Side Effects (n) | 6966 | 3486 | 2857 | 623 |
| Fever | 2084 (29.9) | 770 (22.1) | 1119 (39.2) | 195 (31.3) |
| Swollen lymph nodes | 788 (11.3) | 392 (11.2) | 353 (12.4) | 43 (6.9) |
| Diarrhea | 69 (1.0) | 37 (1.1) | 27 (0.9) | 5 (0.8) |
| Nausea or vomiting | 1099 (15.8) | 466 (13.4) | 525 (18.4) | 108 (17.3) |
| Chills | 285 (4.1) | 101 (2.9) | 150 (5.3) | 34 (5.5) |
| Injection site reactions | 5493 (78.9) | 2695 (77.3) | 2468 (86.4) | 330 (53.0) |
| Severe allergic reactions | 39 (0.6) | 14 (0.4) | 17 (0.6) | 8 (1.3) |
| Fatigue | 4897 (70.3) | 2312 (66.3) | 2222 (77.8) | 363 (58.3) |
| New or worsening joint pain | 1505 (21.6) | 614 (17.6) | 767 (26.8) | 124 (19.9) |
| New or worsening muscle pain | 2113 (30.3) | 894 (25.6) | 1043 (36.5) | 176 (28.3) |
| Headache | 3416 (49.0) | 1538 (44.1) | 1595 (55.8) | 283 (45.4) |
| Dizziness | 81 (1.2) | 39 (1.1) | 35 (1.2) | 7 (1.1) |
| Missing | 0 | 0 | 0 | 0 |
| No. of Side Effects (n) | 6966 | 3486 | 2857 | 623 |
| Mean (SD) | 3.1 (2.00) | 2.8 (1.91) | 3.6 (2.00) | 2.7 (2.09) |
| Median [IQR] | 3 [2.0,5.0] | 3 [1.0,4.0] | 4 [2.0,5.0] | 3 [1.0,4.0] |
| Min - Max | (0–9) | (0–9) | (0–9) | (0–8) |
| 0 side-effects | 529 (7.6) | 279 (8.0) | 131 (4.6) | 119 (19.1) |
| 1 to 2 side-effects | 2419 (34.7) | 1443 (41.4) | 789 (27.6) | 187 (30.0) |
| 3 or more side-effects | 4018 (57.7) | 1764 (50.6) | 1937 (67.8) | 317 (50.9) |
| Missing | 0 | 0 | 0 | 0 |
| Sought medical care for any side effects(n) | 6473 | 3222 | 2737 | 514 |
| Yes | 201 (3.1) | 90 (2.8) | 89 (3.3) | 22 (4.3) |
| Missing | 493 | 264 | 120 | 109 |
| Hospitalized post-vaccination(n) | 6473 | 3222 | 2737 | 514 |
| Yes | 17 (0.3) | 10 (0.3) | 4 (0.1) | 3 (0.6) |
| Missing | 493 | 264 | 120 | 109 |
| Trouble with self-care due to side effects (Yes/No) (n) | 6473 | 3222 | 2737 | 514 |
| Yes | 2030 (31.4) | 853 (26.5) | 1037 (37.9) | 140 (27.2) |
| Missing | 493 | 264 | 120 | 109 |
| Trouble with s self-care due to side effects (Categorical) (n) | 6473 | 3222 | 2737 | 514 |
| Not at all | 4443 (68.6) | 2369 (73.5) | 1700 (62.1) | 374 (72.8) |
| A little | 1166 (18.0) | 509 (15.8) | 562 (20.5) | 95 (18.5) |
| Somewhat | 478 (7.4) | 200 (6.2) | 251 (9.2) | 27 (5.3) |
| A lot | 386 (6.0) | 144 (4.5) | 224 (8.2) | 18 (3.5) |
| Missing | 493 | 264 | 120 | 109 |
| Worked less due to side effects(n) | 4648 | 2380 | 1910 | 358 |
| Yes | 1646 (35.4) | 721 (30.3) | 813 (42.6) | 112 (31.3) |
| Missing | 2318 | 1106 | 947 | 265 |
Note: For two-dose vaccine series, data include side effects reported after either first or booster dose. For those who report missing work due to side effects, it is unknown whether time off from work was sanctioned by their employer to facilitate getting vaccinated.