Active clinical trials for "Virus Diseases"

The primary objective of the study is to evaluate the safety and immunogenicity of non-adjuvanted and adjuvanted monovalent VEE VLP Vaccine in healthy adults (ages 18-50 years) when administered via intramuscular (IM) injection at escalating doses of 2 μg, 10 μg, and 20 μg as a 2-dose primary series (Day 0, Day 28) with a Day 140 booster dose. The secondary objective of the study is to evaluate immunogenicity of the vaccine at the aforementioned time points

As an alternative biomarker of intrahepatic covalently closed circular DNA(cccDNA) transcriptional activity, hepatitis B virus(HBV)RNA may evolve during long-lasting virus-host interactionsduring chronic hepatitis B viral infection.The distribution pattern of serum HBV RNA levels in the natural course of chronic HBV infection remains unclear. Furthermore,serum HBV RNA was associated with response to NAs. So it may be another clinical surrogate marker for intrahepatic cccDNA level after long-term NAs treatment and be used to monitor NAs therapy. The aim of this study was to evaluate thelevels of HBV RNA during the natural courseof CHB and the role in distinguishingthe natural phases of HBV infection and to investigate whether serum HBV RNA level at the end of long-term NAs treatment had a similar or better predict effect on off-therapy relapse than serum HBsAg titer.

Rationale and Background: Since 2013, Butantan Institute has been performing passive pharmacovigilance activities related to its triavalent, fragmented and inactivated vaccine (IB TIV). Objetive: To conduct an active surveillance study focusing on the elderly and health care professionals as part of Butantan pharmacovigilance plan, while passive surveillance activities will continue. The pharmacovigilance plan, via active surveillance, is being implemented in response to WHO requirements for pre-qualification of IB TIV.

Purpose: To determine the number of asymptomatic individuals who have antibodies to SARS-CoV-2, the virus which causes COVID-19

this study evaluates the use of Kagocel for the prevention of acute respiratory viral infections (ARVI) and influenza during the epidemic rise in morbidity in Russia in the 2017-2018 season (epidemiology: number of cases during the period of taking Kagocel and follow-up, severity of the disease, bacterial exacerbations, number of repeated episodes (reinfection); patients demography; safety) in health care workers who are at risk.

Ebola virus is one of the most dangerous human pathogens and is an emerging public health problem in sub-Saharan Africa. Ebola virus disease (EVD) first appeared in 1976. The current epidemic in the Democratic Republic of the Congo (DRC) is one of the largest and most complex ever recorded, and is not yet under control: a new death has been reported on April 10th, 2020. The epidemic was declared a public health emergency of international scope by the World Health Organization (WHO) on July 17th, 2019. Two studies are the "standard" in the assessment of the consequences of infection in survivors, in Liberia (PREVAIL) and Guinea (PostEbogui), especially in: The observation of comparable mortality rates, even if over time there was an improvement in survival, probably linked to the improvement in the quality of care and symptomatic treatment; And the study of the contacts of the survivors, between 4 to 10% of them had done seroconversion with regard to Ebola virus (EBOV) in an asymptomatic or pauci-symptomatic way and that this rate varied according to the degree of exposure to the risk. The DRC's experience in this area and the enormous progress made in the fight against Viral hemorrhagic fevers (VHFs), therapeutically and preventively (where much of which patients have benefited from antiviral treatment or monoclonal antibodies), the technological responses (real-time sequencing of Ebola strains in new cases, vaccination or the use of individual isolation units), show the limits of their effectiveness. A large number of questions therefore remain unanswered: The antibody profile of the survivors, in particular the repertoire of immunoglobulin G (IgG) specific to these individuals and its correlation with survival and its evolution over time; The impact of treatments initiated during the acute phase on these immune abnormalities; Finally, genetic factors linked to the host could play an important role in the response to the Ebola virus. The aim of this study is to provide a better overall understanding of Ebola virus infection and its clinical, virological, and immunological consequences, of cured people and their contacts; strengthen multidisciplinary monitoring of patients after an acute phase of EVD. The results will therefore have a direct impact on the clinical management of this population and on the prevention of possible secondary contamination in the Democratic Republic of the Congo.

Three measures are currently being implemented to control Ebola outbreaks: Monitoring of contacts Isolation and treatment of sick people Vaccination of the population in high-risk areas. In contacts with high viral exposure and therefore a high risk of incubation and rapid expression of infection, the r-VSV-ZEBOV vaccine does not provide adequate protection because vaccine antibody production is effective 6 to 10 days after administration. Specific monoclonal antibodies (Mab) from the Regeneron and mAb114 research specialties have been shown to be effective in reducing mortality in patients with Ebola virus disease (EVD). Their use in a single parenteral administration and good tolerability make them candidates for use in post-exposure prophylaxis (PEP) in individuals at high risk of viral exposure. A comprehensive strategy for the protection of high-risk contacts must therefore be implemented, including the vaccine and the Mabs, to ensure both immediate and prolonged protection. Indeed, the efficacy of the vaccine is likely to be diminished when co-administered with Mabs, as both strategies share the same viral target (the GP envelope glycoprotein) and the vaccine is replicative (and therefore may be inhibited by Mabs). PROVAE aim to evaluate the effectiveness of a comprehensive strategy to prevent transmission of MVE in contacts at high risk of infection, including (i) post-exposure prophylaxis with Mabs and (ii) vaccination with r-VSV-ZEBOV.

Respiratory infections such as colds, flu and pneumonia affect millions of people around the world every year. Most cases are mild, but some people become very unwell. Influenza ('flu') is one of the most common causes of lung infection. Seasonal flu affects between 10% and 46% of the population each year and causes around 12 deaths in every 100,000 people infected. In addition, both influenza and coronaviruses have caused pandemics in recent years, leading to severe disease in many people. Although flu vaccines are available, these need to change every year to overcome rapid changes in the virus and are not completely protective. This study aims to find and develop predictive tests to better understand how and when flu-like illness progresses to more severe disease. This may help to decide which people need to be admitted to hospital, and how their treatment needs to be increased or decreased during infection. The aim is to recruit 100 patients admitted to hospital due to a respiratory infection. It is voluntary to take part and participants can choose to withdraw at any time. The study will involve some blood and nose samples. This will be done on Day 0, Day 2 and Discharge from hospital, and an out-patient follow-up visit on Day 28. The data will be used to develop novel diagnostic tools to assist in rational treatment decisions that will benefit both individual patients and resource allocation. It will also establish research preparedness for upcoming pandemics.

This is an open label controlled household-randomised trial designed to evaluate the efficacy of RESP301 alongside standard of care ("SOC") versus SOC alone.

Coronavirus Disease 2019 (COVID-19) is an infection caused by Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV-2), which affects multiple organ system particularly the lung and heart. Indeed, SARS CoV-2 has various cardiac manifestations which are associated with higher mortality and morbidity. Cardiac involvement, based on elevated levels of myocardial enzymes, have been described in 20 to 30% of COVID-19 infection. However, the physiopathological mechanisms of myocardial injury remains unclear. Main hypothesis include inflammation and cytokine storm, hypercoagulability and vascular thrombosis, inflammation or stress leading to coronary plaque rupture (type I myocardial infarction), supply-demand mismatch and hypoxemia resulting in myocardial damage (type II myocardial infarction) ... Two patterns can be identified : ischemic or non-ischemic pattern including myocarditis, stress induced cardiomyopathy, thrombo-embolic disease. However, the consequences of myocardial damage after confirmed COVID-19 infection are unknown at medium to long term prognosis. Data are needed to identify myocardial damage and to guide effective therapies and follow-up (use of ACE inhibitor, beta-blockers, steroids...? ) In this study, the investigators proposed to collect multimodal cardiac imaging including MRI (Magnetic Resonance Imaging) and TTE (Transthoracic echocardiogram) in order to identify and characterize cardiac injury as ischemic or non-ischemic pattern, to better assess risk stratification and to guide effective therapies if necessary.