Active clinical trials for "Influenza, Human"

The purpose of this study is to determine if different influenza vaccines produce different outcomes in nursing facility residents receiving the required annual influenza vaccination.

Demonstrate improved clinical performance of visually read QuickVue Influenza A+B test.

This study will investigate whether there is a population-level association between circulating respiratory viruses and NHS hospital admissions for acute vascular events using data from national infection surveillance and Hospital Episode Statistics.

To explore the different clinical and CT features distinguishing COVID-19 from H1N1 influenza pneumonia.

Multicapillary Ion mobility spectrometry of nasal air aspirates shall be investigated as screening tool for the detection of Influenza and SARS-CoV-2- infection.

This is a multicenter study with the aim to determine the prevalence of influenza-related invasive pulmonary aspergillosis in Swedish intensive care units and to assess the clinical impact of and risk factors for influenza-related invasive pulmonary aspergillosis

A study to characterize children and adults with influenza like symptoms and to determine risk factors for severe disease and death among those with H1N1.

The purpose of this trial is to assess the knowledge and attitudes of post-partum women regarding influenza and the use of the influenza vaccine in pregnancy.

This study will determine risk factors of human infection with avian influenza A virus, also known as bird flu virus. Certain risk factors such as exposure to poultry, travel history, health status, and other factors may affect one's risk of getting bird flu. Study participants will include individuals, older than age 1, that tested positive for influenza A (H5N1) in a previous surveillance program and controls (individuals that have not tested positive for avian influenza A (H5N1) and have no fever or respiratory symptoms). There will be 1 study visit during which volunteers will be asked detailed questions about their health, work, and travel habits. Study participants will be asked to donate a blood sample to test for antibodies, the part of the blood that fights infection.

This a sub-study of a 5-year study designed to investigate how antibody and T cell responses following influenza vaccine compare among lung transplant patients, patients waiting for lung transplantation, and healthy individuals. This study is designed to investigate two different definitions of influenza vaccine seroprotection at mid-season in lung transplant patients.