Active clinical trials for "Virus Diseases"

The goal of this interventional study is to learn about nasal microbiome and viral infections in newborns hospitalised in neonatology. The main questions it aims to answer are : how often are newborns infected by viruses in neonatology ? how does the microbiome develop during first weeks of life ? how does microbiome and viruses interacts together ? is there a link between viral infection, microbiome, and medical complications during hospitalisation in neonatology ? Participants will have a nasal swab taken each week during their hospitalisation in neonatology, and researchers will take medical data from the medical chart.

Background: - Viral infections are an important cause of illness and death in hospitalized patients as well as outpatients. New strains of viruses may appear and infect both healthy people and those with weak immune systems. A better understanding of these new virus strains (such as SARS-CoV-2, the virus that causes COVID-19) may help to control and prevent these infections. In particular, some viral infections that are less problematic in healthy persons can be life threatening in persons with weak immune systems, and viruses may be able to evolve more rapidly in persons with weak immune systems and therefore develop resistance to existing treatments. Researchers are interested in collecting samples and information from otherwise healthy persons or persons with weak immune systems to study the effects of viruses and their development. Objectives: - To collect samples and data from individuals who have been exposed to or have contracted viral infections. Eligibility: Individuals of all ages who have been diagnosed with a viral infection are suspected to have a viral infection, or have been in close contact with someone with a suspected or actual viral infection that is of interest to investigators in the Laboratory of Infectious Diseases. Healthy persons and persons with weak immune systems (immunocompromised individuals) are eligible to participate. Design: Participants will be pre-screened to determine if they meet the eligibility criteria for the trial. If eligible, evaluation may include a medical chart review, a history and physical examination, review of clinical reports from outside hospitals and laboratories, and review of tissue biopsies. Study procedures may include collection of blood, urine, saliva, nasal fluid sampling, throat swabs, stool, and genital swabs. For participants who have specimens collected as part of their medical care (e.g. wound swabs, spinal tap, bronchoscopy, liver biopsy etc.), researchers may use leftover specimens from the clinical laboratory for testing. Specimens may be collected up to 4 times per week during the first 2 weeks after enrollment, and then as many as 2 times per week for up to 2 years. Some participants may be asked to continue providing specimens if there is concern for relapse or recurrence of the infection. Treatment is not offered under this study.

The goal of this observational study is to learn about the effects of coronavirus infection in patients with early-stage lung cancer. The main question it aims to answer is whether the interval of surgery and COVID-19 infection will affect the surgery and prognosis of the patients.

The purpose of this study is to investigate the efficacy and safety of Lenvatinib Plus Tislelizumab for Locally Advanced Unresectable or Metastatic Hepatocellular Carcinoma With Hepatitis B Virus Infection and Biomarker Analyses.

Kidney transplant recipients are at increased risk of infections, including Varicella-zoster virus (VZV) infections. Vaccination against VZV is routinely offered to all kidney transplant recipients and candidates in Denmark. In this exploratory observational study, the VZV specific immune response in kidney transplant candidates and recipients will be characterized at different time points in relation to transplantation, vaccination and infections. More knowledge on the immune reaction to transplantation, VZV vaccination and VZV infections may provide improved strategies for prevention and treatment of VZV infections in kidney transplant candidates and recipients.

This study will assess the immunogenicity, safety and tolerability of VN-0200 after intramuscular injections in Japanese healthy elderly subjects.

Hepatitis B virus (HBV) infection is a major global health issue with 257 million chronically infected individuals. Of note, China has the largest population accounting for one third of the world's infected population. Approximately, about 300 000 people die each year due to the consequences of HBV. In 2016, the World Health Organization (WHO) proposed the goal for elimination of hepatitis B as public health threat by 2030 and China will be a major contributor towards this global goal. Currently, two approved therapeutic strategies are available including pegylated interferon (IFN) or nucleos (t) ide analogues (NA), which could suppress HBV replication and slow disease progression. Here, investigators hope to launch a cohort study to reveal the clinical features relating to therapeutic efficacy of antiviral therapy and the prognosis of patients with differential therapeutic strategies.

Patients with medical conditions requiring allogeneic hematopoietic cell transplantation (allo-HCT) are at risk of developing a condition called graft versus host disease (GvHD) which carries a high morbidity and mortality. This is a phase I/II study that will test the safety and efficacy of hematopoietic cell transplantation (HCT) with ex-vivo T cell receptor Alpha/Beta+ and CD19 depletion to treat patients' underlying condition. This process is expected to substantially decrease the risk of GvHD thus allowing for the elimination of immunosuppressive therapy post-transplant. The study will use blood stem/progenitor cells collected from the peripheral blood of parent or other half-matched (haploidentical) family member donor. The procedure will be performed using CliniMACS® TCRα/β-Biotin System which is considered investigational.

This study collects data on microbiological factors and lung function parameters (e.g. spirometry, body plethysmography, lung-MRI) to assess their interaction on the lung growth and lung development of infants and children with Cystic Fibrosis (CF).

The purpose of this study is to evaluate the safety and immunogenicity of three vaccine strategies that may prevent Ebola virus disease (EVD) events in children and adults. Participants will receive either the Ad26.ZEBOV (rHAd26) vaccine with a MVA-BN-Filo (MVA) boost, or the rVSVΔG-ZEBOV-GP (rVSV) vaccine with or without boosting, or placebo.