Objective: The aim: The present study was carried out on patients recovered from COVID-19, including those patients who have taken vaccine and those who have not.
Patients and methods: Materials and methods: The patients were recruited via an online panel and surveyed at different regions of Iraq from June 1, 2021, to August 30, 2021.
Results: Results: Our results demonstrated that the highest percentage of people recommended Pfizer vaccine followed by Sinopharm, while AstraZeneca vaccine was least recommended.
Conclusion: Conclusions: The efficacy of different vaccines differed significantly; the highest effectiveness was observed with Pfizer vaccine followed by AstraZeneca and Sinopharm with effectiveness ranging from 94%, 89%, and 74%, respectively. Further, the highest percentage of re-infected patients was observed with Sinopharm vaccine followed by Astra Zeneca and Pfizer vaccine, respectively. Also, the highest percent of re-infection with masking used was seen in the case of Sinopharm vaccine followed by AstraZeneca and Pfizer vaccine. Although, we observed that post-vaccination symptoms were lowest than pre-vaccination symptoms, the percent of asymptomatic cases post-vaccination was highest than pre-vaccination cases for all vaccines.
Keywords: Astra Zeneca vaccine; COVID-19; Pfizer vaccine; Sinopharm; post-vaccination symptoms.