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Immunity 9 months after two injections of vaccine in people who have suffered from COVID-infection and people who have never had corona

SARS-CoV-2: Comparison of IgG levels at 9 months post both doses of vaccination in COVID-survivor and COVID-naïve HCW

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2022/02/040665
Enrollment
64
Registered
2022-02-28
Start date
Unknown
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

Health Condition 1: B972- Coronavirus as the cause of diseases classified elsewhere

Interventions

None listed

Sponsors

Rajiv Gandhi Cancer Institute and Research Centre
Lead Sponsor
Dr Rajiv Chawla
Collaborator

Eligibility

Inclusion criteria

Inclusion criteria: Health Care Worker Employed at Rajiv Gandhi Cancer Institute History of positive RT-PCR test for SARS-CoV-2 Vaccinated against COVID-19 Completed 9 months after second dose of vaccine

Exclusion criteria

Exclusion criteria: Non-Health Care Worker Not employed at Rajiv Gandhi Cancer Institute Not vaccinated against COVID-19

Design outcomes

Primary

MeasureTime frame
IgG antibody levelTimepoint: 9 months post second dose of vaccination—

Secondary

MeasureTime frame
Covid antigen (RTPCR) positiveTimepoint: 0 to 9 months post second dose of vaccination—

Countries

India

Contacts

Public ContactDr Shagun Bhatia Shah

Rajiv Gandhi Cancer Institute and Research Centre

drshagun_2010@rediffmail.com9891769779

Outcome results

None listed

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