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The comparison of Immune response to the 4th dose booster with mRNA-1273 COVID-19 vaccine in individuals who had received 2 doses of CoronaVac and booster with ChAdOx-1 or BNT162b2 COVID-19 vaccine

The comparison of Immune response to the 4th dose booster with mRNA-1273 COVID-19 vaccine in individuals who had received 2 doses of CoronaVac and booster with ChAdOx-1 or BNT162b2 COVID-19 vaccine

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
TCTR
Registry ID
TCTR20220205002
Enrollment
100
Registered
2022-02-05
Start date
2022-01-18
Completion date
Unknown
Last updated
2026-08-03

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

Conditions

Booster vaccination with mRNA 1273 COVID vaccine in individuals who had received 2 doses of CoronaVac and booster with BNT162b2 or ChAdOx-1 COVID vaccine. mRNA 1273 , booster, covid 19 vaccine, immunogenicity

Interventions

An adults aged 18 years and older who had received 2 doses of CoronaVac and booster with ChAdOx-1 vaccine.,An adults aged 18 years and older who had received 2 doses of CoronaVac and booster with BNT1
Basic Science,Basic Science

Sponsors

Thammasat University Hospital
Lead Sponsor
No Study Secondary Sponsor
Collaborator

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: A healthy adults aged 18 years and older who had received 2 doses of CoronaVac and booster with BNT162b2 or ChAdOx-1 COVID vaccine.

Exclusion criteria

Exclusion criteria: - Acute fever with body temperature above 38 degree Celsius on the day of vaccination. - History of COVID-19 infection - Get another vaccination no more than 2 weeks before enrollment. - pregnant with a gestational age of less than 12 weeks

Design outcomes

Primary

MeasureTime frame
Immunogenicity 14 days after complete vaccination Anti-S-RBD antibody level ,Reactogenicity 7 days after vaccination Diary card

Secondary

MeasureTime frame
Persistent of immune response 6 months after complete vaccination Anti-S-RBD antibody level and ELISpot,Immunogenicity 6 months after complete vaccination Anti-S-RBD antibody level and ELISpot

Countries

Thailand

Contacts

Public ContactAuchara Tangsathapornpong

Faculty of Medicine, Thammasat University

dr.auchara@yahoo.com029269514

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026