View clinical trials related to Virus Diseases.
Filter by:SARS-CoV-2 is responsible for COVID-19. Today, RT-PCR performed on a nasopharyngeal sample remains the gold standard for diagnosing SARS-CoV-2 infection. However, several other assays have been developed to increase testing capabilities and provide rapid screening strategies such as antigenic lateral flow assays. Most recommended tests to date are based nasopharyngeal sampling that is often poorly tolerated by patients and associated with a significant risk of infection for the sampler. Saliva can be used but provide slightly lower sensitivities depending of the subsequent assay use with those samples. The detection of the N antigen of SARS-CoV-2, by ELISA or rapid immunochromatographic technique, on a serum or blood sample would make it possible to overcome these constraints and to provide a new testing alternative. ELISA tests are faster, cheaper and easier to automate than molecular biology approaches. Blood sampling may be easier to perform in certain populations (in particular in hospitalized patients who already benefit from blood sampling, blood donors, etc.), require less equipment, and is better tolerated (immunocompromised patients subject to blood sampling repeated), and can be integrated more systematically into assessments carried out at the entrance to hospitals or in town, etc. If the N-antigen levels in blood are sufficient, rapid antigen assay on capillary blood could also provide useful testing alternatives. In a pilot study conducted at Bichat Claude Bernard Hospital, the sensitivity of the first available commercial test was estimated at 93% (95% CI, 84.7-100), and its specificity at 98% (95% CI, 85.3-100). The main objective of the current work is to evaluate the sensitivity of the SARS-CoV-2 N antigen detection in the serum compared to nasopharyngeal SARS-CoV-2 PCR in several populations such as symptomatic hospitalized patients, symptomatic non-hospitalized patients and asymptomatic subjects. For each detection kit evaluated, the primary endpoint is the sensitivity (and its 95% confidence interval) of the detection of SARS-CoV-2 N antigen in serum overall and in those populations. The specificity will also be assess.
The investigators aim to assess the effectiveness and safety of sofosbuvir/velpatasvir/voxilaprevir (SOF/VEL/VOX) for 12 weeks in hepatitis C virus (HCV)-infected patients who fail to prior NS5A-containing DAA regimens and HCV genotype 1a and 3 patients who fail to prior non-NS5A-containing DAA regimen in Taiwan on a basis of a multicenter observational study.
The purpose of the study is to evaluate the reliability and accuracy of a newly developed point-of-care analyzer, theCytoTracker, to measure complete blood count (CBC) parameters and discriminate between viral and bacterial infections.
In order to tackle the unmet needs in chronic HBV infection, a consortium of clinical partners has gathered to establish a registry for patients with hepatitis B mono- and co-infections. The partners will build up a European-wide registry to be able to stratify patients for upcoming clinical trials. Extensive analyses of virus and host-specific parameters are to be carried out from these patients. The knowledge gained thereby should contribute to a better understanding of the HBV control and enable patient stratification with regard to immunomodulatory therapies. Furthermore, hepatitis B patients are to be identified who are willing to participate in future studies to investigate immunotherapies to cure HBV infections (e.g. therapeutic vaccines).
This is a prospective study in which a process of identifying and improving a reduction of functional capacity in COVID-19 survivors >50 years old. The overall goal of this study to identify the feasibility and value of risk-guided medical therapy and exercise intervention in COVID-19 survivors.
A multicenter, randomized, parallel-group, placebo-controlled, double-blind, Phase 1/2a clinical study to investigate the safety, tolerability, immunogenicity and exploratory efficacy of a vaccine regimen consisting of an Ad26.Mos4.HIV prime and a boost with Modified Vaccinia Ankara (MVA)-BN-HIV in combination with broadly neutralizing antibodies (bNAb) PGT121, PGDM1400, and VRC07-523LS in human immunodeficiency virus type 1 (HIV-1)-infected study participants on suppressive anti-retroviral therapy (ART).
The Building Resilience and Vital Equity (BRAVE) project seeks to partner with American Indian tribal communities in North Carolina to establish COVID-19 services and resources for American Indian communities. The goal of this study is to 1) understand the barriers and social implications of COVID19 testing and vaccination among American Indians by designing and implementing culturally sensitive survey tools and intervention materials; 2) Implement BRAVE outreach and testing interventions to increase testing in American Indian communities; 3) analyze data and share back with tribal communities to improve perceptions of COVID-19 testing in the AI community and decrease in vaccine hesitancy.
Background: People with COVID-19 have varying degrees of illness. It can range from no or mild symptoms to critical illness and death. Some people with COVID-19 have long-term effects regardless of the severity of their disease initially. Researchers want to learn more to see if they can better predict where a person may fall on the illness spectrum. Objective: To follow and record symptoms of COVID-19 to see how it progresses in people and why some people stay sick longer than others. Eligibility: People ages 18-65 who received a COVID-19 positive test result in the 72 hours before their enrollment in the study. Design: Participants will complete a 30-minute baseline survey. They will answer questions about themselves and their health. Participants will get a digital wristband and temperature sensor in the mail. They will get instructions on how to set up and wear the devices. They will download a mobile application on their phone. The app will collect data from the devices. Participants will wear the wristband and sensor every day for the first month. Then they will wear the devices for a total of 40 days over the next 5 months. On the days they wear the devices, they will answer a 2-question health survey via the app. Participants will answer a 20-minute online survey about their health every 30 days. If participants are hospitalized, a family member or close friend will be asked to complete a brief 7-minute online survey about their hospital stay and treatment. Participants will be sent alerts and reminders throughout the study. Participation will last for 6 months.
IRIS (Infection with RespIratory Syncytial Virus) is an observational, multi-center study enrolling infants with severe RSV infection and healthy controls. Inclusion criteria are age below two years and hospitalization due to RSV infection at three German sites. Exclusion criteria are premature birth, congenital or acquired bronchopulmonary or cardiac diseases, and immunodeficiency. Blood and respiratory specimens are collected upon admission, and RSV and other pathogens are analyzed by multiplex polymerase chain reaction (PCR). Further biomaterials including plasma, nasal lining fluid, blood cells, DNA, and RNA specimens are sampled in a dedicated biobank. Detailed information on demographic characteristics and medical history is recorded, as well as comprehensive clinical data including vital signs, medication, and interventions.
This study evaluates an investigational vaccine that is designed to protect humans against infection with respiratory syncytial virus (RSV) and is administered as a nasal spray. Specifically, the study analyzes the safety of, and the immune response to, the vaccine when administered to healthy children between the ages of 6 and 24 months who are seronegative to RSV.