Seroprevalence of COVID-19 in Thailand

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

TCTR

Registry ID

TCTR20200828001

Enrollment

400

Registered

2020-08-28

Start date

2020-09-15

Completion date

Unknown

Last updated

2026-03-30

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

Conditions

COVID-19 infection COVID-19 Seroprevalence Antibody Thailand

Interventions

General population without contraindications to blood collection

Screening

General population of Bangkok&#44

Thailand

Eligibility

Sex/Gender

All

Age

20 Years to 60 Years

Inclusion criteria

Inclusion criteria: 1. Age 20-60 years 2. Have been living in Bangkok since January 1 st 2020 3. Can communicate in Thai language

Exclusion criteria

Exclusion criteria: 1. Took antiviral drugs within 30 days 2. Immunocompromised 3. Enrolled in other COVID-19 drug/vaccination research 4. Dementia 5. Mental retard

Design outcomes

Primary

Measure	Time frame
Seroprevalence of COVID-19 antibody Month 0, Month 6, Month 12 SARS-CoV-2 IgM IgG antibody ELISA assay, neutralization anticody	—

Secondary

Measure	Time frame
N/A N/A N/A	—

Countries

Thailand

Contacts

Public ContactNattachai Srisawat

Excellence Center for Critical Care Nephrology, King Chulalongkorn Memorial Hospital, Faculty of Med

drnattachai@yahoo.com0818361891

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Apr 4, 2026