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Immunogenicity of COVID-19 vaccines in KCMH health care workers

Immunogenicity of COVID-19 vaccines in King Chulalongkorn Memorial hospital health care workers

Status
Unknown
Phases
Unknown
Study type
Observational
Source
TCTR
Registry ID
TCTR20210325003
Enrollment
400
Registered
2021-03-25
Start date
2021-03-23
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

COVID-19 COVID-19

Interventions

Group vaccine Coronavac by Sinovac,Group vaccine ASD1222 by Oxford - AstraZeneca,it depends on the vaccine that Thai MOPH supply to the hospital,it depends on the vaccine that Thai MOPH supply to the
1 Coronavac,2 ASD1222,3 pending,4 pending

Sponsors

Ratchadapiseksompotch Research Fund
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. The subject is aged > 18 years 2. Subjects had no history of COVID-19 vaccination before enrollment 3. Subjects who can comply with trial procedures and are available for the duration of follow-up

Exclusion criteria

Exclusion criteria: 1. Subjects who received any other vaccines within 1 month prior to enrollment 2. Subjects who received blood or blood product or immunoglobulin within 3 months prior to enrollment 3. Subjects participating in any clinical trial with COVID-19 immunogenicity

Design outcomes

Primary

MeasureTime frame
Seroconversion rate by neutralizing antibody 4 weeks, 6 and 12 months after complete immunization cPass SARS-CoV-2 Neutralization Antibody Detection Kit GenScript

Secondary

MeasureTime frame
Seroconversion rate by IgG 4 weeks, 6 and 12 months after complete immunization Enzyme-Linked Immunosorbent Assay (ELISA) ,Immunogenicity to variant strain 4 weeks after complete immunization Plaque reduction neutralization test PRNT,Immunogenicity by T cell 4 weeks after complete immunization IFN gamma ELISPOT

Countries

Thailand

Contacts

Public ContactWatsamon Jantarabenjakul

Faculty of Medicine, Chulalongkorn University

watsamon.j@chula.ac.th66818276255

Outcome results

None listed

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