| Recruiting | Preparedness Through Respiratory Virus Epidemiology and Community Engagement NCT07147517 | University of California, San Diego | — |
| Recruiting | Can the Ergometric Test in Flu-like Syndrome Help in the Outcome Analysis of Unvaccinated Patients NCT07007377 | University of Sao Paulo | — |
| Completed | Behavioral Economics to Improve Flu Vaccination Using EHR Nudges Replication NCT06626321 | University of Pennsylvania | N/A |
| Completed | Improved Immunology Outcomes Associated With Lactoferrin Fortified With HMO in Infant Formula NCT06158659 | Heilongjiang Feihe Dairy Co. Ltd. | N/A |
| Completed | Behavioral Economics to Improve Flu Vaccination Using EHR Nudges NCT06057727 | University of Pennsylvania | N/A |
| Unknown | Benchtop NMR Spectroscopy for Assessment of Clinical Human Pathologies (BRANCH-P STUDY) NCT05473325 | Willows Health | — |
| Completed | A Study to Prove Non-inferior Immunogenicity of Grippol Quadrivalent Compared to Grippol Plus NCT06385821 | NPO Petrovax | Phase 3 |
| Unknown | Elderberry for Immune Support NCT05435144 | Nutraceuticals Research Institute | N/A |
| Completed | Effect of Kunamin in SARS-CoV-2 RT-PCR Positive Covid-19 Patients NCT05417997 | RAAS Nutritionals, LLC | Phase 3 |
| Active Not Recruiting | Quantification of Viral Load in the Upper Respiratory Tract in Patients Treated With Olsetamivir for Influenza NCT04515446 | Centre Hospitalier Universitaire de Nice | N/A |
| Completed | Burden of Influenza at Emergency Department Level : BIED NCT04153331 | Hospices Civils de Lyon | N/A |
| Completed | Safety of a Single Dose or Two Doses of Shenzhen Quadrivalent Influenza Vaccine NCT03430089 | Sanofi Pasteur, a Sanofi Company | Phase 1 |
| Completed | Ability of Beta-glucan Supplementation to Augment Immune Function NCT03769012 | Kemin Foods LC | N/A |
| Completed | FLUAD vs. FLUZONE HD Influenza Vaccine in Residents of Long Term Care NCT03694808 | David H. Canaday | Phase 4 |
| Terminated | Efficiency of Antagonist Drugs of the Cellular Transcriptomic Signature of Influenza A Virus Infection. NCT03212716 | University Hospital, Lille | Phase 2 |
| Completed | Immunogenicity and Safety of the Shenzhen Trivalent Inactivated Influenza Vaccine Versus a Trivalent Influenza NCT03344029 | Sanofi | Phase 4 |
| Completed | Safety and Immunogenicity of Fluzone® Quadrivalent and Fluzone® High-Dose, Influenza Vaccines NCT03308825 | Sanofi Pasteur, a Sanofi Company | Phase 4 |
| Completed | Clinical Performance of the Diassess Influenza A and B Test NCT03035396 | Diassess Inc. | N/A |
| Completed | Safety and Immunogenicity Study of H3N2 M2SR Monovalent Influenza Vaccine in Healthy Volunteers NCT02822105 | FluGen Inc | Phase 1 |
| Completed | Alere i FluA*B Biologic Test Relocated in Emergency Service for Flu Diagnosis NCT03293979 | Fondation Hôpital Saint-Joseph | — |
| Unknown | Safety and Reactogenicity of a PAL Combined With Seasonal Flu Vaccine in Healthy Adults NCT02188810 | Folia Biotech Inc. | Phase 1 |
| Withdrawn | A Phase 1, Open Label, Ascending Dose Cohort Study of the Pharmacokinetics of Anti-Influenza Hyperimmune Intra NCT02037282 | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 1 |
| Completed | Efficacy of Nasal Naphazoline Hydrocloride + Pheniramine Maleate + Panthenol Compared With Naphazoline Hydrocl NCT01533220 | EMS | Phase 3 |
| Completed | A Double-blind, Randomised, Parallel Group,Comparative Study With Rose-hip Liquid and Placebo Given to Healthy NCT01459952 | Hyben Vital ApS | Phase 3 |
| Completed | Licensing Flu Shot Study NCT01440205 | University of Pennsylvania | N/A |
| Completed | Safety, Tolerability and Immunogenicity of a Plant-Made H1 VLP Influenza Vaccine in Adults NCT01302990 | Medicago | Phase 1 |
| Completed | Study of Post-Exposure Ingavirin® Prophylaxis of Influenza and Acute Respiratory Viral Infections NCT03189537 | Valenta Pharm JSC | Phase 3 |
| Completed | Laboratory Study of Licensed H1N1 Influenza Vaccines in HIV-1 Perinatally Infected Children and Youth NCT01484522 | International Maternal Pediatric Adolescent AIDS Clinical Trials Group | — |
| Completed | Efficacy and Safety of Paracetamol, Chlorpheniramine and Phenylephrine in the Treatment of Common Cold and Flu NCT01389518 | Hospital de Clinicas de Porto Alegre | Phase 3 |
| Terminated | PET-CT Scans in Healthy Volunteers After Flu Vaccination NCT00769002 | Hackensack Meridian Health | N/A |
| Completed | Immunogenicity and Safety Following a Single Dose of Influenza Vaccines in Healthy Children Who Received Eithe NCT00644540 | Novartis Vaccines | Phase 2 |
| Terminated | Effect of the Consumption of a Fermented Milk on Common Infections in Adults Submitted to Multi-stressor Situa NCT01315418 | Danone Global Research & Innovation Center | N/A |