Active clinical trials for "Influenza, Human"

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 influenza vaccine-induced antibodies in lung transplant patients beyond the season of vaccination.

Overall, this study will determine (1) the effect of vaccine type (FluMist vs. TIV) on immunization rates, (2) assess the feasibility of school immunization clinics, and (3) inform a larger study to understand the effects of these two vaccines on reducing influenza.

The Sanofi Pasteur Quadrivalent Influenza Vaccine (QIV) Pregnancy Registry will be a prospectively recruited pregnancy surveillance program designed to collect and analyze information on vaccine exposures, pregnancy outcomes, and fetal and offspring outcomes.

Premature infants (born before 34 wk) are routinely vaccinated against RSV but vaccination rate against influenza are low in spite of national programs. Study goal is to evaluate the effectiveness of short intervention during RSV prophylaxis visit, planned to educate parents about the importance of influenza vaccination.

Background: - A challenge study exposes a person to a disease and allows researchers to study the disease through the body's healing process. An influenza challenge study that looks at different amounts of the flu virus can provide more information on the smallest amount needed to cause an infection. Researchers want to give one dose of the Influenza A H1N1 virus to healthy volunteers to see how the body responds to the virus. Objectives: To find the smallest dose of Influenza A H1N1 virus that may cause a mild to moderate flu infection in a healthy adult. To study how the body s immune system responds to the virus. Eligibility: Healthy volunteers at least 18 years of age. Participants must be willing to remain in isolation for a minimum of 9 days. Design: Participants will be admitted to a hospital inpatient isolation unit. They will be screened with a physical exam and medical history. They will also have heart and lung function tests. Blood, urine, and nasal swab/wash samples will be collected. Participants will receive a single nasal spray of the flu virus. They will stay on the inpatient unit for at least 9 days. Participants will be monitored for the length of their stay. They will have frequent blood tests and other procedures as needed. Participants will be allowed to go home once they have had two negative tests for the virus. The tests will be given on two consecutive days....

This surveillance study will include all consenting adults hospitalized with influenza (cases) at the SOS network of hospitals as well as influenza negative patients(controls), to assess vaccine effectiveness in each group. Both groups will be followed throughout their hospitalization and for 30 days post discharge to monitor severity of illness and outcomes following their illness.

Using desk location information and employees' building entry/exit swipe card data from a company that offered a free 2-day worksite influenza vaccination clinic, we separately identify the vaccination effects of base proximity-the inverse of walking distance between one's desk and the clinic-and functional proximity-the likelihood of passing near the clinic during the course of a normal work day (ie, days when the clinic is not open).

The investigators conducted a 3-arm randomized controlled trial to test whether a low-cost planning intervention could increase influence vaccination rates.

This is an observational study of safety and occurrence of influenza-like illness following administration of flu cell culture derived adjuvanted swine origin A (H1N1) pandemic subunit vaccine in subjects 6 months of age and older.

The purpose of this study is to generate data on immunogenicity and safety of the monovalent H1N1 vaccine in support of the development and registration.