Table 3. Frequency of side effects of four studied vaccines. Data are given as n (%).
| Side effects of the vaccines | AstraZeneca® | Sputnik® | Covaxin® | Sinopharm® |
|---|---|---|---|---|
| Fever | 199 (64.4) | 106 (49.5) | 30 (49.2) | 166 (18.7) |
| Fatigue | 193 (62.5) | 100 (46.7) | 21 (34.4) | 148 (16.6) |
| Muscle pain | 185 (59.9) | 128 (59.8) | 19 (31.1) | 91 (10.2) |
| Topical reaction | 113 (36.6) | 57 (26.6) | 25 (41.0) | 159 (17.9) |
| Chills | 161 (52.1) | 89 (41.6) | 14 (23.0) | 37 (4.2) |
| Dizziness or headache | 80 (25.9) | 47 (22.0) | 11 (18.0) | 85 (9.6) |
| Cold-like symptoms | 113 (36.6) | 49 (22.9) | 10 (16.4) | 39 (4.4) |
| Poor sleep quality | 39 (12.6) | 22 (10.3) | 3 (4.9) | 24 (2.7) |
| Excessive sweating | 42 (13.6) | 22 (10.3) | 5 (8.2) | 12 (1.3) |
| Joint pain | 38 (12.3) | 24 (11.2) | 3 (4.9) | 10 (1.1) |
| Shortness of breath | 25 (8.1) | 7 (3.3) | 2 (3.3) | 14 (1.6) |
| Nasal congestion | 20 (6.5) | 10 (4.7) | 0 (0.0) | 18 (2.0) |
| Palpitation | 15 (4.9) | 13 (6.1) | 2 (3.3) | 10 (1.3) |
| Itchy skin | 14 (4.5) | 6 (2.8) | 3 (4.9) | 19 (2.1) |
| Nausea | 19 (6.1) | 4 (1.9) | 6 (9.8) | 8 (0.9) |
| Numbness (face and extremities) | 9 (2.9) | 6 (2.8) | 3 (4.9) | 15 (1.7) |
| Sore throat | 12 (3.9) | 12 (5.6) | 1 (1.6) | 8 (0.9) |
| Diarrhea | 14 (4.5) | 4 (1.9) | 2 (3.3) | 9 (1.0) |
| Abdominal pain | 11 (3.6) | 4 (1.9) | 1 (1.6) | 7 (0.8) |
| Olfactory and taste dysfunction | 6 (1.9) | 4 (1.9) | 2 (3.3) | 8 (0.9) |
| Pain when swallowing | 9 (2.9) | 8 (3.7) | 0 (0.0) | 2 (0.2) |
| Purpura | 10 (3.2) | 0 (0.0) | 1 (1.6) | 3 (0.3) |
| Anaphylactic shock | 6 (1.9) | 1 (0.5) | 0 (0.0) | 6 (0.7) |
| Vomiting | 6 (1.9) | 1 (0.5) | 3 (4.9) | 2 (0.2) |
| Coagulation problems and a decrease in platelet count | 7 (2.3) | 4 (1.9) | 0 (0.0) | 0 (0.0) |
| Hot flashes | 2 (0.6) | 4 (1.9) | 0 (0.0) | 5 (0.6) |
| Visual dysfunction | 2 (0.6) | 5 (2.3) | 0 (0.0) | 3 (0.3) |
| Severe drowsiness | 1 (0.3) | 1 (0.5) | 0 (0.0) | 7 (0.8) |
| Feeling energized | 6 (1.9) | 1 (0.5) | 0 (0.0) | 0 (0.0) |
| Restlessness (malaise) | 1 (0.3) | 0 (0.0) | 1 (1.6) | 4 (0.4) |
| Swelling (face) | 2 (0.6) | 2 (0.9) | 0 (0.0) | 1 (0.1) |
| Constant hunger and thirst | 1 (0.3) | 0 (0.0) | 0 (0.0) | 4 (0.4) |
| Hives | 1 (0.3) | 0 (0.0) | 0 (0.0) | 3 (0.3) |
| Hearing dysfunction | 2 (0.6) | 2 (0.9) | 0 (0.0) | 0 (0.0) |
| Hair loss | 0 (0.0) | 1 (0.5) | 0 (0.0) | 2 (0.2) |
| Eye soreness | 1 (0.3) | 1 (0.5) | 0 (0.0) | 1 (0.1) |
| Runny nose | 1 (0.3) | 0 (0.0) | 2 (3.3) | 0 (0.0) |
| Chest tightness | 0 (0.0) | 1 (0.5) | 1 (1.6) | 1 (0.1) |
| Lip swelling | 1 (0.3) | 0 (0.0) | 2 (3.3) | 0 (0.0) |
| Cough | 0 (0.0) | 1 (0.5) | 0 (0.0) | 2 (0.2) |
| Swelling (legs) | 1 (0.3) | 0 (0.0) | 0 (0.0) | 1 (0.1) |
| Balance problems | 2 (0.6) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Hematuria | 1 (0.3) | 0 (0.0) | 0 (0.0) | 1 (0.1) |
| Anorexia | 1 (0.3) | 1 (0.5) | 0 (0.0) | 0 (0.0) |
| Sexual dysfunction | 0 (0.0) | 1 (0.5) | 0 (0.0) | 1 (0.1) |
| Hallucination | 0 (0.0) | 1 (0.5) | 0 (0.0) | 0 (0.0) |
| Other | 8 (2.6) | 4 (1.9) | 2 (3.3) | 8 (0.9) |