Table 2. History of COVID-19 infection and vaccination data among studied population.
| COVID-19 infection and vaccination data | No. (%) |
| Previously tested RTPCR test positive for COVID-19 | |
| Yes | 465 (74.4) |
| No | 160 (25.6) |
| Type of vaccines | |
| Pfizer/BioNTech | 422 (67.52) |
| Oxford/AstraZeneca | 126 (20.16) |
| Sinopharm | 77 (12.32) |
| Number of COVID-19 vaccine doses administered | |
| One dose | 123 (19.68) |
| Two doses | 502 (80.32) |
| Infected with COVID-19 after vaccination | |
| Yes | 298 (47.68) |
| No | 327 (52.32) |
| Side effect following vaccination | |
| Yes | 514 (82.24) |
| No | 111 (17.76) |
| Duration of symptoms following vaccination (Day ± SD): | 3.1±1.94 |
| Severity of side effects following vaccination: | |
| Mild | 222 (35.51) |
| Moderate | 207 (33.12) |
| Severe | 85 (13.6) |
| No symptoms | 111 (17.76) |