View clinical trials related to Influenza, Human.
Filter by:The purpose of this study is to develop a nasal model for influenza infection using the live attenuated influenza vaccine (LAIV). The investigators will administer LAIV to healthy adult volunteers in order to simulate influenza infection, and obtain nasal specimens to measure influenza virus and inflammatory/immune responses. In a subset of participants, cystic fibrosis transmembrane conductance regulator (CFTR) function will also be evaluated via measurement of nasal potential difference (NPD)
The aim of the study is to identify what sender/signal combinations are most persuasive in encouraging low socioeconomic males living in the U.S. to take-up seasonal flu vaccination. The investigators plan to recruit male subjects and randomly assign them to four persuasion treatments: three of which vary dimensions of the sender of a medical recommendation (racial concordance and authority treatments) and one which varies the signal (standard vs. empathetic). Specifically, the investigators will show subjects videos of either Black or white actors/actresses providing scripted information on the flu vaccination. The investigators will randomize the race of the sender and if the subject is Black, also randomize the authority of the sender, with the actor portraying either a doctor or a layperson. In addition, the investigators will vary the script used in the experiment between one that acknowledges past injustices (indicated as an empathetic script hereafter) and one that does not (indicated as a standard script hereafter). The investigators will provide subjects a free flu shot coupon and elicit the price at which subjects would be willing to give up this coupon for a cash reward. Lastly, in light of the relevance of vaccination take-up in combating COVID-19 pandemic, the investigators will assess demand for information about a COVID-19 vaccine, with subjects invited to receive results of a safety and efficacy review from a trusted or standard source. The design requires the collection of baseline and endline surveys combined with administrative data from pharmacies about coupon redemption. The primary outcomes of interest are posterior beliefs about seasonal flu vaccination, demand and willingness-to-pay (WTP) for a free flu shot coupon, redemption of the coupon, and demand for information about a COVID-19 vaccine.
This study is being conducted to assess the safety, tolerability, and immunogenicity of the live-attenuated CodaVax-H1N1 influenza vaccine as compared to normal saline placebo both administered via intranasal spray to healthy adults.
The primary objectives of the study are: - To describe the safety profile of the different quadrivalent recombinant influenza vaccine (RIV) formulations. - To describe the hemagglutination inhibition (HAI) and seroneutralization (SN) antibody responses against hemagglutinin (HA) (H1, H3, B/Victoria, and B/Yamagata) antigens present in the control vaccine in all groups at all timepoints. The secondary objectives of the study are: - To describe antigenic coverage in each group by assessing the HAI and SN antibody responses against a panel of H3 antigens (not present in any of the vaccine formulations). - To describe HAI and SN antibody responses in each group against each of the H3 antigens. - To compare the HAI and SN antibody responses for the groups with different H3 antigens to the control group.
To compare the safety and clinical efficacy (death, overall hospitalization, hospitalization for influenza or pneumonia) of ID QIV delivered via an intradermal device with imiquimod cream pretreatment with conventional intramuscular (IM) standard dose QIV and IM high-dose TIV
This study will evaluate a home-based approach to influenza infection control, using prepositioned home-based influenza self-test kits, telemedicine services, and rapid delivery of Xofluza (Baloxavir marboxil) for administration within 48 hours of symptom onset.
This study is a stepped-wedge cluster-randomized trial of on-site rapid testing and treatment for influenza in homeless shelters within the Seattle area to determine whether this strategy reduced the incidence of influenza in the shelter environment.
Primary Objective: To demonstrate the superior relative effectiveness of QIV-HD as compared to QIV-SD among persons 65 years of age and older for the prevention of cardiovascular and/or respiratory hospitalizations. Secondary Objective: - To assess the clinical relative effectiveness of QIV-HD as compared to QIV-SD in prevention of: - inpatient hospitalization for selected circulatory and respiratory causes - death, either all-cause or cardiovascular or respiratory causes - inpatient hospitalization (using primary and secondary discharge diagnoses) - inpatient hospitalization (using admission diagnoses) - hospital emergency room visits - primary care visits to physician or - major acute cardiovascular events (MACE) - To assess the characteristics of inpatient hospitalization or hospital emergency room visits or primary care visits to physician by QIV-HD and QIV-SD groups. - To describe the clinical relative effectiveness of QIV-HD as compared to QIV-SD: - by age group and by group with specific comorbidities - for different periods of observation - To describe all serious adverse events (SAEs) (including adverse event of special interest [AESIs]) for all subjects in both QIV-HD and QIV-SD groups.
The purpose of this study is to evaluate the Immunogenicity and safety of the simultaneously vaccination of Inactivated Enterovirus 71 Vaccine (EV71) and seasonal influenza vaccine(SIV)
Influenza is a potentially lethal disease still responsible for thousands excess deaths both in Europe and the United States. Despite the use of neuraminidase inhibitors, its treatment is mostly based on symptomatic care. Lung microbiota has been shown to be involved in the immunity against influenza and is correlated with lung inflammation in numerous chronic respiratory diseases. We therefore aim to analyse the correlation between lung bacteriobiota and influenza ICU mortality