Prevalence of Adverse Reactions to Different COVID-19 Vaccinations among Karachi Residents

Background: Coronavirus disease 2019 (COVID-19) pandemic emerged in Karachi and rapidly spread throughout Pakistan Since February 26, 2020.

Objectives: Vaccination is currently one of the most effective COVID-19 eradication approach. The purpose of this study was to gather data on the adverse effects of the COVID-19 vaccine.

Methodology: It was an observational study that was carried out between the 11th and 23rd of April 2021, and the participants were Karachi residents. We looked at the proportion of self-reported local and systemic adverse effects within seven days of immunization in people who filled out Google forms and received one or two doses of the vaccine.

Results: The vaccination ratio for male was slight higher than females. Participants aged between 51 to 60 years and 41 to 50 years had higher number of vaccinations. Sinopharm is by far the most widely used vaccine. After the first dose of vaccination, the majority of participants complained of fever, chills, muscle pain, and arm pain, whereas after the second dose, the majority of participants had no symptoms, with a few participants complaining of fever, chills, diarrhea, and muscle pain.

Conclusion: The first and second doses' post-vaccination adverse effects were mild and predictable, and there were no hospitalizations; this data can help lessen vaccine hesitancy.