Active clinical trials for "Influenza, Human"

The purpose of this study is to compare the efficacy and safety of influenza vaccine in patients with inflammatory bowel disease (IBD) on immunosuppressive therapy with IBD patients on aminosalicylates and healthy historical controls.

The proposed study will evaluate whether the use of non-pharmaceutical methods, such as surgical masks, isolation of patients and personal hygiene, are acceptable and effective in preventing the spread of influenza within the family.This will be achieved by conducting a randomized, controlled, unblinded, clinical trial. Family members of an index case with influenza like illness, will be randomly allocated to two groups. In the intervention group, family members will receive comprehensive guidance about sanitation and hygiene, as well as surgical masks to wear whenever in close contact (3 feet / 1 meter) with the index case. In addition, they will be asked to isolate the index case as much as possible. In the control group, family members will receive only standard guidance about sanitation and hygiene relevant for reducing the transmission of influenza. The primary end-point of the study will be secondary infection of influenza of at least one of the family members in order to asses the efficacy of the interventions. In addition, the compliance to those interventions will be evaluated. The study hypothesis is that use of non-pharmaceutical methods will be acceptable and will reduce the secondary infection rate among them by 50%.

The purpose of this study is to develop and determine the effectiveness of a multi-level community participatory intervention designed to rapidly immunize hard-to-reach populations, including substance users, within disadvantaged minority communities. Specific Aims of the project are as follows: To identify the relative contributions of personal factors and structural barriers to immunization status in hard-to-reach populations. To estimate the size of the hard-to-reach population in specified disadvantaged urban communities using venue-based sampling, probability-based sampling, capture-recapture methods and modified Delphi techniques. To compare vaccination rates in hard-to-reach populations between neighborhoods that receive a community-based vaccine outreach intervention versus neighborhoods where vaccines are offered through standard public health programs, using an incremental crossover multilevel community intervention design.

The aim of this study is to investigate the immunogenicity and safety of the inactivated whole-virion vaccine for teenagers and adults. The investigators will test the vaccine in participants aged above 12 years, for a randomized, blind, placebo-controlled, clinical study. The investigators designed one dosage groups: 15 μg of hemagglutinin antigen. Control group is designed to inoculate seasonal influence vaccine and aluminum hydroxide adjuvant. Participants will receive 2 doses of vaccine at 21-day intervals. Safety up to 6 months and changes in hemagglutinin inhibition (HI) titers at 21 days after each vaccination will be determined.

The overall objective of this study is to describe the effectiveness of Flublok Quadrivalent vaccine compared to standard dose inactivated influenza vaccine (SD-IIV) in adults 18 through 64 years of age. During this study, Flublok Quadrivalent or SD-IIV will be administered according to the guidelines in the Prescribing Information materials and only to persons for whom it is indicated. The 2018-2019, 2019-2020, and 2020-2021 formulations of recombinant influenza vaccine (Flublok Quadrivalent vaccine) and SD-IIV will be evaluated for outcomes including all polymerase chain reaction (PCR)-confirmed influenza, PCR-confirmed hospitalized influenza, hospitalized community-acquired pneumonia and cardio-respiratory events.

The main goal of this research study is to use data from activity trackers (such as Fitbits), lab tests, and surveys to see if activity, sleep, and heart rate data can tell the difference between when someone has a respiratory illness (e.g., flu) and when they are feeling healthy. The research will also study an investigational flu@home test and app. If successful, results from the study could be used in the future to better identify people with respiratory illness. In addition, this study will test the accuracy of an at-home flu test kit compared to laboratory test results.

If study subject's legal guardians who decide voluntarily to participate the clinical trial, and sign the Informed Consent Formed, study subjects eligible for participating this trial protocol were assigned to test group or control group with the ratio of 4:1 and receiving the test or control drug 1 time or 2 times.

The aim of this study is to investigate the immunogenicity and safety of the inactivated whole-virion vaccine for teenagers and adults. The investigators will test the vaccine in participants aged 12-60 years, for a randomized, blind, placebo-controlled, age-stratified clinical study. The investigators designed three dosage groups: 7.5 μg,15 μg and 30 μg of hemagglutinin antigen. According to the age of the subjects, Each group was divided into different age subgroups. Phosphate buffer solution and Aluminum hydroxide adjuvant as placebo controls were both set up in the subgroups.Participants will receive 2 doses of vaccine at 21-day intervals.Safety up to 6 months and changes in hemagglutinin inhibition (HI) titers at 21 days after each vaccination were determined.

The purpose of the study is to evaluate immunogenicity and safety of three different doses of candidate hexvalent vaccine in comparison to co-administration of EupentaTM Inj. and Imovax® Polio in separate injections at four weeks after completion of three-dose primary series at 6-10-14 weeks of age when administered to healthy infants and thereby to select the optimal dose of candidate vaccine

This was a phase IV, multi-center, open-label study. The study collected serum samples from children 6 months to less than (<) 9 years of age who received Fluzone Quadrivalent vaccine and adults greater than or equal to (>=) 65 years of age who received Fluzone High-Dose Quadrivalent vaccine for submission to CBER to aid in the influenza vaccine strain selection process.