Investigation The Effect of   Pfizer , AstraZeneca , and  Sinopharm Vaccines Against  SARS-CoV-2 in Iraq  Using Cluster  of Differentiation 4 (CD4 ) and Vitamin  D3

Zoubaida Kh. Ibraheem; Raghad H. AL-azzawy

doi:10.24996/ijs.2023.64.10.10

Authors

Zoubaida Kh. Ibraheem Department of Biology, collage of Science, University of Baghdad, Baghdad, Iraq https://orcid.org/0000-0001-5706-3975
Raghad H. AL-azzawy Department of Biology, collage of Science, University of Baghdad, Baghdad, Iraq

DOI:

https://doi.org/10.24996/ijs.2023.64.10.10

Keywords:

COVID-19, ELISA, CD4, Vitamin D3, Iraq

Abstract

The research aimed to study the vaccination efficiency against the emerging virus SARS-CoV-2, which includes Pfizer, AstraZeneca and Sinopharm vaccines that are used exclusively in Iraq, by measuring the level of immune cells CD4⁺ as well as vitamin D3 using ELISA technology. Taking serums were taken from vaccinated individuals: 20 uninfected before individuals who got a vaccination and 20 people with prior infections who had the vaccine (for each type of the three vaccines). Samples were collected 21 days following the second dose as well as 3 to 6 months thereafter. The results showed that the most effective vaccine was AstraZeneca and the results of T-cells were the highest compared to Pfizer and Sinopharm.