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Evaluation of Pastocovac Plus Vaccine As a Booster Dose on Vaccinated Individuals With Inactivated Covid-19 Vaccine Publisher



Farahmand B1 ; Sadat Larijani M2 ; Fotouhi F1 ; Biglari A3 ; Sorouri R4 ; Bagheri Amiri F5 ; Eslamifar A2 ; Jalali T6 ; Salehivaziri M6 ; Banifazl M7 ; Dahmardeh S8 ; Eshratkhah Mohammadnejad A1 ; Bavand A2 ; Tavakoli M6 Show All Authors
Authors
  1. Farahmand B1
  2. Sadat Larijani M2
  3. Fotouhi F1
  4. Biglari A3
  5. Sorouri R4
  6. Bagheri Amiri F5
  7. Eslamifar A2
  8. Jalali T6
  9. Salehivaziri M6
  10. Banifazl M7
  11. Dahmardeh S8
  12. Eshratkhah Mohammadnejad A1
  13. Bavand A2
  14. Tavakoli M6
  15. Verezbencomo V9
  16. Mostafavi E5
  17. Noori Daloii H10
  18. Ashrafian F2
  19. Saberpour M1
  20. Ramezani A2
Show Affiliations
Authors Affiliations
  1. 1. Department of Influenza and Other Rrespiratory Viruses, Pasteur Institute of Iran, Tehran, Iran
  2. 2. Clinical Research Department, Pasteur Institute of Iran, Tehran, Iran
  3. 3. School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. IPI Directorate, Pasteur Institute of Iran, Tehran, Iran
  5. 5. Department of Epidemiology and Biostatistics, Research Centre for Emerging and Reemerging Infectious Diseases, Pasteur Institute of Iran, Tehran, Iran
  6. 6. COVID-19 National Reference Laboratory, Pasteur Institute of Iran, Tehran, Iran
  7. 7. Iranian Society for Support of Patients with Infectious Disease, Tehran, Iran
  8. 8. Vaccination Department, Pasteur Institute of Iran, Tehran, Iran
  9. 9. Finlay Vaccine Institute, Havana, Cuba
  10. 10. Health and Safety Department, Production and Research Complex, Pasteur Institute of Iran, Tehran, Iran

Source: Heliyon Published:2023


Abstract

COVID-19 pandemic has been managed through global vaccination programs. However, the antibody waning in various types of vaccines came to notice. Hereby, PastoCovac Plus as a protein subunit vaccine was investigated in immunized health care workers by COVAXIN (BBV152). The booster vaccine was recommended at least three months post the second dose of COVAXIN. Sera collection was done before and after each injection. SARS-CoV-2 PCR test was done monthly to detect any asymptomatic and symptomatic vaccine breakthrough. 47.9 and 24.3% of the participants were seronegative for anti-N and anti-S antibodies three months after the second dose of COVAXIN, respectively. On average, fold-rises of 70, 93, 8 and mean-rises of 23.32, 892.4, 5.59 were recorded regarding neutralizing antibody, quantitative and semi-quantitative anti-Spike antibody, respectively. Anti-Spike and neutralizing antibodies seroconversion was seen 59.3% and 45.7%, respectively. The vaccine breakthrough assessment showed that all the isolated samples belonged to SARS-CoV-2 Delta variant. PastoCovac Plus boosting is strongly recommended in combination with inactivated vaccine platforms against SARS-CoV-2. © 2023
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