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Investigation of adverse reactions after COVID-19 vaccination

Epidemiological and immunological investigation of the causes and risk factors of adverse reactions after COVID-19 vaccination - Investigation of the causes and risk factors of adverse reactions after COVID-19 vaccination

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000044045
Enrollment
200
Registered
2021-04-27
Start date
2021-04-26
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

Adverse reaction to vaccines

Interventions

None listed

Sponsors

National Hospital Oraganizationa, Mie National Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: *Patients who had an adverse reaction after COVID-19 vaccination and gave informed consent for this study. The criteria for anaphylaxis were based on the Brighton criteria. *Matched control subjects who have consented to have blood samples taken and who have not experienced allergic symptoms by vaccination.

Exclusion criteria

Exclusion criteria: *Those who did not give informed consent. *Those who are judged to be ineligible by the physician

Design outcomes

Primary

MeasureTime frame
Patient factors associated with the vaccine adverse reactions *demographics *history of anaphylaxis *comorbid allergic diseases *other underlying diseases *use of polyethylene glycol-containing cosmetics, daily necessities, and drugs

Secondary

MeasureTime frame
Exploratory investigation of culprit components of vaccines and mechanisms to cause the reaction. *in vitro and in vivo tests using vaccines, vaccine components and polyethylene glycols - skin test (prick and intradermal) - specific IgE and IgG antibodies - basophil activation test - other immunological tests

Countries

Japan

Contacts

Public ContactMizuho Nagao

National Hospital Organization Mie National Hospital Institute for Clinical Research

nagao.mizuho.yt@mail.hosp.go.jp059-232-2531

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026