Investigation of the relationship between influenza virus and antibodies in nasal swabs

Research aimed at elucidating the relationship between viral load and mucosal antibody in influenza - The relationship between viral load and mucosal antibody in influenza

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000053552

Enrollment

500

Registered

2024-02-12

Start date

2024-02-13

Completion date

Unknown

Last updated

2025-12-08

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

Conditions

Influenza

Interventions

Nasopharyngeal swab collection

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria:

Exclusion criteria

Exclusion criteria: Persons who fall under any of the following 1)Patients who have received anti-influenza virus drugs within the past 7 days 2) Other persons deemed unsuitable by the research director

Design outcomes

Primary

Measure	Time frame
Threshold value based on logistic regression and ROC analysis using specific antibody titer against influenza virus antigen and success/failure of virus isolation test	—

Secondary

Measure	Time frame
Sensitivity, specificity, and ROC-AUC were determined by logistic regression and ROC analysis using specific antibody titers against influenza virus antigens and the success or failure of virus isolation tests.	—

Countries

Japan

Contacts

Public ContactMorio Nagira

Chiba University Hospital Department of Human Mucosal Vaccinology

morio.nagira@shionogi.co.jp043-222-7171

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Feb 4, 2026