Active clinical trials for "Influenza, Human"

To evaluate the safety and immunogenicity of quadrivalent influenza virus split vaccine in healthy population aged 3-8 years following different immunization procedures.

The purpose of this study is to evaluate the immunogenicity and safety of Ad26.RSV.preF-based vaccine and quadrivalent high-dose seasonal influenza vaccine when administered either concomitantly or separately.

In the current study, the study team will explore whether small incentives are effective at promoting flu vaccine uptake. The study is designed to compare the relative efficacy of incentives of equal perceived expected value (EV) or equal implementation costs, to assess whether people are more likely to get vaccinated in response to lotteries with very high payoffs than to small certain cash payout or slightly higher-probability, more moderate payoffs. In particular, given the potential appeal of official state lottery tickets, one study arm will receive a Pennsylvania scratch-off lottery ticket for getting a flu vaccine. A primary hypothesis is that lotteries will outperform simple reminders (encouraging respondents to get the flu shot at their upcoming appointment) and the standard of care, representing the ambient healthcare system and public health campaigns to increase vaccination.

This is a randomized, double-blinded, Phase II study in healthy males and non-pregnant females, 18-64 years of age. This clinical trial is designed to assess the safety, reactogenicity, and immunogenicity of a pre-pandemic 2017 monovalent inactivated influenza A/H7N9 virus vaccine (2017 H7N9 IIV) manufactured by Seqirus Inc (Seqirus) administered at different dosages (3.75 microgram mcg, 7.5 mcg and 15 mcg of hemagglutinin (HA) per dose) given with MF59(R) adjuvant manufactured by Seqirus Inc., or without adjuvant (15 mcg of HA per dose). Phosphate buffered saline (PBS) diluent manufactured by Patheon Manufacturing Services LLC will be used to achieve certain targeted doses. Approximately 371 subjects who are in good health and meet all eligibility criteria will be randomized into one of 4 study groups. The study will be conducted at up to 7 Vaccine and Treatment Unit (VTEU) sites and will last approximately 17 months, with subject participation duration of approximately 13 months. The Primary Objectives of the study are: 1) To assess the safety and reactogenicity following receipt of two doses of 2017 H7N9 IIV administered intramuscularly (IM) at different dosages approximately 21 days apart given with or without MF59(R) adjuvant; 2) To assess the serum hemagglutinin inhibition (HAI) and neutralizing (Neut) antibody responses approximately 21 days following receipt of two doses of 2017 H7N9 IIV administered IM at different dosages approximately 21 days apart with or without MF59(R) adjuvant.

The aim of this study is to test the effectiveness of communicating the concept of herd immunity on actual influenza vaccine uptake using a randomized controlled trial.

The first Russian quadrivalent influenza vaccine was developed to improve the effectiveness of vaccination and the cost-effectiveness of preventive immunization.Current study was conducted to assess the safety, reactogenicity, immunogenicity, and efficacy of quadrivalent inactivated subunit influenza vaccine Grippol® Quadri (NPO Petrovax Pharm, LLC, Russia) versus trivalent inactivated polymer-subunit vaccine Grippol® Plus (NPO Petrovax Pharm, LLC, Russia) in subjects from 18 to 60 years old.

Background: The flu is a common viral infection that can be deadly for certain people. Vaccines against flu have been developed to teach the body to prevent or fight the infection. A new vaccine may help the body to make an immune response to H1 flu, a flu strain that infects humans. Objective: To test the safety and effectiveness of the H1 Stabilized Stem Ferritin vaccine (VRC-FLUNPF099-00-VP). Eligibility: Healthy people ages 18-70 years old who got at least 1 licensed flu vaccine since January 1, 2014. Design: Participants received 1 or 2 vaccinations by injections (shots) in the upper arm muscle over 4 months. Participants received a thermometer and recorded their temperature and symptoms every day a diary card for 7 days after each injection. The injection site was checked for redness, swelling, or bruising. Participants had 9-11 follow-up visits over 12-15 months. At follow-up visits, participants had blood drawn and were checked for health changes or problems. Participants who reported influenza-like illness had nose and throat swabs for evaluation of viral infection. Some participants had apheresis. A needle was placed into a vein in both arms. Blood was removed through a needle in the vein of one arm. A machine removed the white blood cells and then the rest of the blood was returned to the participant through a needle in the other arm. A separate consent was provided to participants for genetic testing on their samples.

The purpose of this study is to evaluate the immunogenicity and safety of inactivated subunit H5N1 influenza vaccine in individuals who have previously received live attenuated H2N2, H6N1, or H9N2 influenza vaccine, as well as in individuals who have never previously received H5N1 or other pandemic live attenuated influenza vaccines.

A Phase 2, single center, randomized, double blind study evaluating the safety, efficacy, and immunogenicity of MVA NP+M1 in the H3N2 human influenza challenge model; on healthy adult volunteers.

The present study is a first-in-man clinical trial evaluating OVX836, a recombinant broad spectrum vaccine for Influenza. This clinical trial will evaluate the safety and the immune response of increasing doses of OVX836 after intramuscular or intranasal administrations in healthy volunteers.