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Study of Short-term Correlation Between Influenza Virus and Antibodies in Nasal Swabs

Longitudinal Study aimed at elucidating the relationship between viral load and mucosal antibody in influenza - Influenza Longitudinal Study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000059938
Enrollment
120
Registered
2025-12-10
Start date
2025-12-10
Completion date
Unknown
Last updated
2026-02-09

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

Conditions

Influenza

Interventions

Sponsors

Chiba University Hospital
Lead Sponsor
Shionogi Co. Ltd. Japan Institute for Health Security
Collaborator

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria:

Exclusion criteria

Exclusion criteria: Persons who fall under any of the following 1) Patients who have used excluded or discontinued medications, such as antiviral drugs, within the past seven days. 2) Patients who are using excluded or discontinued medications, such as antiviral drugs, during their treatment with influenza during study participation. 3) Patients diagnosed with COVID-19. 4) Other individuals deemed inappropriate by the principal investigator. The following medications will be excluded or discontinued: I. Drugs that directly inhibit influenza virus replication 1) Neuraminidase inhibitor Oseltamivir, Zanamivir, Laninamivir, Peramivir 2) Cap-dependent endonuclease inhibitors Baloxavir marboxil 3) M2 ion channel inhibitors Amantadine 4) RNA-dependent RNA polymerase inhibitors Favipiravir II. Drugs with immunosuppressive effects 1) Injectable, oral, inhaled, and nasal corticosteroids (steroids) Prednisolone, Methylprednisolone, Dexamethasone, Hydrocortisone, Fluticasone propionate, and other corticosteroids 2) Injectable and oral calcineurin inhibitors Cyclosporine, Tacrolimus 3) mTOR inhibitors Sirolimus Everolimus 4) Antimetabolites/Antimetabolites Azathioprine, Mycophenolate mofetil, Methotrexate 5) Alkylating agents Cyclophosphamide 6) Immunosuppressive biologics Rituximab, Belimumab, Abatacept, Basiliximab 7) Molecularly targeted drugs such as JAK inhibitors Tofacitinib, Baricitinib, Upadacitinib

Design outcomes

Primary

MeasureTime 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

MeasureTime frame
- Regression analysis using the number of days from symptom onset until virus isolation test negativity and viral RNA negativity and specific antibody (IgG, IgA, secretory IgA) responses to influenza antigens - Analysis of the relationship between host RNA and influenza virus viral load and mucosal antibody titers

Countries

Japan

Contacts

Public ContactMorio Nagira

Chiba University Hospital Department of Human Mucosal Vaccines

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

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Feb 15, 2026