Elucidation of pathophysiology of allergic reaction by COVID-19 vaccine

Elucidation of pathophysiology of allergic reaction by COVID-19 vaccine - Search for the cause of COVID-19 vaccine allergy

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000045550

Enrollment

250

Registered

2021-09-23

Start date

2021-07-26

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

Allergy to COVID19 vaccine

Interventions

Prick test with vaccine additives

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: (1) Those who are 16 years of age or older at the time of obtaining consent. (2) Those who, after receiving sufficient explanation and understanding, have given their free written consent to participate in this study.

Exclusion criteria

Exclusion criteria: (1) Those who have refused to participate in this research. (2) Others who are judged by the principal investigator to be inappropriate as research subjects.

Design outcomes

Primary

Measure	Time frame
Prick test positivity rate in patients allergic to COVID-19 vaccine	—

Secondary

Measure	Time frame
Positive rates of blood counts, serum total IgE levels, and basophil stimulation tests in patients allergic to COVID-19 vaccine and healthy volunteers	—

Countries

Japan

Contacts

Public ContactKoremasa Hayama

Nihon University School of Medicine Division of Cutaneous Science, Department of Dermatology

hayama.koremasa@nihon-u.ac.jp03-3972-8111

Outcome results

None listed

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