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Safety and Immunological Responses after COVID-19 vaccination in Thai Pregnant Women

Safety and Immunological Responses after COVID-19 vaccination in Thai Pregnant Women

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
TCTR
Registry ID
TCTR20210717002
Enrollment
165
Registered
2021-07-17
Start date
2021-08-27
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

Pregnancy outcomes following COVID-19 pregnancy in Thai women COVID-19, vaccination, pregnant, Thai

Interventions

sinovac- astra (4wk interval),astra zeneca-astra zeneca (8wk interval),astra zeneca-astra zeneca (3-4wk interval),sinovac- pfizer (4wk interval),pfizer- pfizer (4wk interval)
Sinovac/Astra,Astra/astra,Astra/pfizer,sinovac/pfizer,pfizer/pfizer

Sponsors

National Research Council of Thailand (NRCT)
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
18 Years to 45 Years

Inclusion criteria

Inclusion criteria: 1. Singleton pregnancy 2. Alive, intrauterine pregnancy 3. Gestational age >12 weeks 4. Literacy in Thai 5. Thai language literacy 6. Able to use applications e.g. Google form, Line 7. Able to comply follow-up schedules 8. Willing to participate in the study

Exclusion criteria

Exclusion criteria: 1. History of uterine bleeding >2 times in the current pregnancy 2. Having uterine bleeding on the enrollment day 3. History of or having pre-eclampsia, abnormal placental position, preterm labor, fetal growth restriction 4. History of cigarettes smoking, alcohol drinking, recreational drugs 5. Recent immunization in prior 14 days 6. Previous COVID-19 immunization 7. Detection of COVID-19 in prior 90 days 8. Blood transfusion in prior 90 days 9. History of severe drug hypersensitivity 10. Type 1, 2 diabetes mellitus 11. Hypertension 12. Having uncontrollable diseases 13. Immunocompromised conditions, including steroid use 14. Investigators' judgement

Design outcomes

Primary

MeasureTime frame
Adverse events Delivery Descriptive statistics

Secondary

MeasureTime frame
Antibody response Delivery Descriptive statistics

Countries

Thailand

Contacts

Public ContactChenchit Chayachinda

Faculty of Medicine Siriraj Hospital, Mahidol University

chenchit.cha@mahidol.ac.th66863123623

Outcome results

None listed

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