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Booster Effect of mRNA Vaccine on Antibody Response for SARS-CoV-2 After Complete Vaccination With Sinos

Booster Effect of mRNA Vaccine After Complete Vaccination With Sinos: an Observational Study

Status
UNKNOWN
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05213455
Enrollment
150
Registered
2022-01-28
Start date
2022-01-01
Completion date
2022-03-15
Last updated
2022-03-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Vaccine Reaction

Brief summary

In most parts of the world, mRNA vaccines were used to provide protection to population against COVID 19. However, in some countries, including Pakistan, traditional viral vaccines named as Sinovac and Sinopharm were used for mass level immunization. Though these vaccines were approved by WHO, their efficacy had been questioned. Now after recommendation of booster doses, we aim to see the effect of mRNA vaccine as a booster dose after Sinovac and Sinopharm in terms of antibody response. (IgG RBD SARS CoV2)

Detailed description

In most parts of the world, mRNA vaccines were used to provide protection to population against COVID 19. However, in some countries, including Pakistan, traditional viral vaccines named as Sinovac and Sinopharm were used for mass level immunization. Though these vaccines were approved by WHO, their efficacy had been questioned. Now after recommendation of booster doses, we aim to see the effect of mRNA vaccine (BNT162b2, pfizer) as a booster dose after Sinovac and Sinopharm in terms of antibody response. (IgG RBD SARS CoV2). The antobody IgG RBD levels will be checked before the booster dose and then after 3 weeks of the booster.

Interventions

BIOLOGICALbooster vaccine for COVID 19

The effect of Booster vaccine will be seen in participants in terms of antibody response IgG

Sponsors

Lahore General Hospital
Lead SponsorOTHER_GOV

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

* people who have received two doses of sinopharm or sinovac and six months have passed after the second dose

Exclusion criteria

* people getting one shot of sinopharm or sinovac or got vaccine other than sinopharm and sinovac.

Design outcomes

Primary

MeasureTime frameDescription
IgG RBD levelsafter 3 weeks of booster vaccine doseto see the effect of booster vaccine after 3 weeks in terms of IgG RBD

Countries

Pakistan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026