| Recruiting | Post Authorization Efficacy and Safety Study (PAES) to Confirm and Collect More Clinical Data of Buccalin® Tab NCT06736288 | Laboratorio Farmaceutico SIT srl | Phase 4 |
| Recruiting | Prospective Clinical Evaluation of the BioFire Emerging Coronavirus Panel for the Detection of COVID-19 and Ot NCT07221097 | BioFire Defense LLC | — |
| Not Yet Recruiting | Analysis of Nasopharyngeal Microbiota in Patients With Respiratory Infections NCT06556420 | Fondazione Policlinico Universitario Agostino Gemelli IRCCS | — |
| Recruiting | Nationwide Research on the Rewilding of Kindergarten Yards NCT06390878 | Natural Resources Institute Finland | N/A |
| Unknown | Impact of High Flow Therapy on Complications Related to Airway Stenting NCT06069817 | Cardarelli Hospital | N/A |
| Recruiting | Early Diagnosis of Invasive Lung Aspergillosis NCT05860387 | University Hospital Ostrava | — |
| Unknown | Effect of IN Hospital PCR Based Assessment of Patients With Lower Respiratory Tract Infections on LEngth of St NCT05904223 | Alexander Zoufaly | N/A |
| Completed | MeMed BV® Test Evaluation in Adult Emergency Department Patients NCT05706935 | University of Wisconsin, Madison | — |
| Terminated | Efficacy and Safety of Trimodulin (BT588) in Subjects With CAP Including COVID-19 Pneumonia NCT05531149 | Biotest | Phase 3 |
| Completed | Improved Respiratory Infection by Consuming Lactoferrin Fortified a2 Growing up Formula in Children of 2 to 3 NCT05670678 | a2 Milk Company Ltd. | — |
| Completed | Netosis in Determination of Respiratory Infection Severity NCT04318691 | Assistance Publique - Hôpitaux de Paris | — |
| Unknown | EEG as Predictor of HD-tDCS Effectiveness in Long COVID-19 NCT05289128 | Federal University of Paraíba | N/A |
| Recruiting | Phase 2a Multiple Ascending Dose Study in Hospitalized Patients With Pneumonia. NCT05123755 | Vasomune Therapeutics, Inc. | Phase 2 |
| Completed | Clinical Trial to Evaluate the Efficacy and Safety of DWKH NCT05683951 | Daewon Pharmaceutical Co., Ltd. | Phase 3 |
| Unknown | COVID-Like Illness Respiratory Pathogens. A Prospective Cohort on the COVID-19 Post-acute Condition NCT05047666 | Bernhard Nocht Institute for Tropical Medicine | — |
| Unknown | Association of Inspiratory Muscle Training With HD-tDCS for Assistance to Patients With Long Covid-19 NCT05359770 | Suellen Marinho Andrade | N/A |
| Unknown | Effectiveness of an Optimal-Massive Intervention in Older Patients With Dysphagia NCT04581486 | Hospital de Mataró | N/A |
| Completed | Continuous Temperature Telemonitoring of Patients With COVID-19 and Other Infectious Diseases in Hospital at H NCT05959928 | Vitio Medical S.L. | — |
| Completed | COVID-19 : Pulmonary Ultrasound in Primary Care NCT05226403 | Geprovas | — |
| Completed | Limiting Adverse Birth Outcomes in Resource-Limited Settings NCT04102644 | University of North Carolina, Chapel Hill | — |
| Terminated | Avoiding Neuromuscular Blockers to Reduce Complications NCT03962725 | Beth Israel Deaconess Medical Center | Phase 4 |
| Completed | The Clinical Trial to Evaluate the Efficacy and Safety of CKD-497 NCT03726853 | Chong Kun Dang Pharmaceutical | Phase 2 |
| Completed | Impact of the Use of CRP on the Prescription of Antibiotics in General Practitioners NCT03540706 | Centre Hospitalier Intercommunal Creteil | N/A |
| Suspended | Vitamin D Level Among Athletes in Uzbekistan NCT03623763 | Research Institute of Epidemiology, Microbiology and Infectious Diseases, Uzbekistan | — |
| Withdrawn | Infection Detection by Breath Analysis NCT02981550 | BreathTec Biomedical Inc. | — |
| Unknown | Fluid Restriction Keeps Children Dry NCT02989051 | Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) | Phase 2 / Phase 3 |
| Unknown | Dialogue Around Respiratory Illness Treatment NCT02943551 | Seattle Children's Hospital | N/A |
| Completed | Sputum Validation for the Molecular Diagnosis of Respiratory Viral Infections in Cystic Fibrosis NCT03684759 | University Hospital, Brest | — |
| Completed | Respiratory Infection in Older Patients NCT04347395 | Changi General Hospital | N/A |
| Completed | Driving Pressure And EFL in Adult Cardiac Surgery NCT03064659 | Ospedale San Raffaele | — |
| Withdrawn | Preventive Oral Care NCT00800696 | Shaare Zedek Medical Center | N/A |
| Completed | Spillover Effects of Water, Sanitation, and Hygiene Interventions on Child Health NCT02396407 | University of California, Berkeley | N/A |
| Completed | A Randomized Trial of Vitamin D to Reduce Respiratory Infection NCT01705314 | McMaster University | N/A |
| Completed | Water Filters and Improved Cookstoves in Western Rwanda NCT02239250 | London School of Hygiene and Tropical Medicine | N/A |
| Completed | Hospital Stay and Respiratory Infection NCT02047383 | Universidad de Granada | — |
| Completed | Evaluating the Impact of Community Led Total Sanitation Programs in Mali NCT01900912 | Universidad Nacional de La Plata | N/A |
| Completed | Vitamin D Supplementation and Acute Respiratory Infection in Older Long-Term Care Residents NCT01102374 | University of Colorado, Denver | Phase 2 |
| Unknown | Test of a Preventive Effect of a Deodorant Device Against Respiratory Infections NCT00969800 | Taiko Pharmaceutical Co., Ltd. | N/A |
| Completed | Micronutrient Sprinkles in a Daycare Center NCT00967551 | Emory University | Phase 3 |
| Completed | STOPFLU: Is it Possible to Reduce the Number of Days Off in Office Work by Improved Hand-hygiene? NCT00821509 | Finnish Institute for Health and Welfare | N/A |
| Completed | Human Lung Responses to Respiratory Pathogens NCT01967628 | University of Iowa | Phase 1 / Phase 2 |
| Completed | Chlorhexidine & Pneumonia in Nursing Home Residents NCT00841074 | University of Louisville | Phase 1 |
| Completed | Unclogging the Pediatric Emergency Room: Impact of Rapid Viral Diagnostics NCT00278759 | University of British Columbia | N/A |
| Completed | Azithromycin in Bronchiolitis Obliterans Syndrome NCT01009619 | KU Leuven | Phase 4 |
| Completed | Impact of Zinc Supplementation in Low Birth Weight Infants on Severe Morbidity, Mortality and Zinc Status: A R NCT00272142 | Society for Applied Studies | N/A |
| Completed | Aerosolized Antibiotics and Respiratory Tract Infection in Patients on Mechanical Ventilation NCT00396578 | Stony Brook University | Phase 2 |
| Completed | Reduction of Bacterial Resistance With Inhaled Antibiotics in the Intensive Care Unit NCT01878643 | Stony Brook University | EARLY_Phase 1 |
| Completed | Vitamin E and Infection in the Elderly NCT00758914 | Tufts University | N/A |