Active clinical trials for "Virus Diseases"

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a newly identified, highly contagious RNA virus causing respiratory infectious disease, Coronavirus Disease 2019 (COVID-19). Conjunctivitis has been reported as a rare finding of the disease, and preliminary studies showed that the virus RNA could be detected in ocular secretions using polymerase chain reaction (PCR) assays when conjunctivitis present. This study aims to estimate the proportion of SARS-CoV-2 associated conjunctivitis among patients with suspected viral conjunctivitis presented to the ophthalmology clinics of Wilmer Eye Institute during the COVID-19 pandemic. The investigators also aim to identify whether SARS-CoV-2 associated conjunctivitis is an isolated finding or an early sign of COVID-19.

To provide oral sorivudine ( BV-araU ) to pediatric HIV-infected patients with varicella-zoster viral disease who have failed or are intolerant of alternative therapy.

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.

The purpose of the study is to describe the rate of occurrence of clinical diagnosis of acute respiratory infection (an infection that affects normal breathing) and different types of respiratory pathogens (harmful organisms) of new respiratory infections in a population at high risk for severe illness.

This was a multicenter, open-label study of oral brincidofovir (BCV) treatment of serious disease or conditions caused by double-stranded DNA (dsDNA) virus(es). Subjects received either a weight-based or a fixed dose of oral BCV once weekly (QW) or twice weekly (BIW) for up to 3 months until clinical disease was resolved or stabilized and/or viral DNA by polymerase chain reaction testing was negative for 4 consecutive weeks, whichever was longer. Under the first protocol amendment, adults and adolescents (≥13 years) received 200 mg or 300 mg BCV BIW (not to exceed 4 mg/kg total weekly dose) depending on the difficulty of treating their disease (i.e., Group 1 or Group 2, respectively), and pediatric subjects (≤12 years) received 4 mg/kg BCV BIW. Under the second protocol amendment, adults and adolescents (≥13 years), regardless of viral infection/disease, had a maximum weekly dose of 200 mg, i.e., 200 mg QW or 100 mg BIW; not to exceed 4mg/kg total weekly dose. Pediatric subjects (≤12 years), regardless of viral infection/disease, had a maximum weekly dose of 4 mg/kg, i.e., 4 mg/kg QW or 2 mg/kg BIW; not to exceed 200 mg.

Primary endpoints Incidence of symptomatic and asymptomatic infection with SARS-CoV-2 and other respiratory viruses as determined by molecular (e.g. PCR) and serological testing Associations between the magnitude and quality of mucosal and serum antibody responses to SARSCoV- 2 and protection from infection with SARS-CoV-2 Associations between the magnitude and quality of T cell responses to SARS-CoV-2 and protection from infection with SARS-CoV-2 Secondary endpoints Secondary attack rate and household cumulative infection rate with SARS-CoV-2, influenza, RSV, and other respiratory viruses Seroincidence and seroprevalence of SARS-CoV-2 a determined by binding antibodies to SARS-CoV-2 spike and nucleocapsid Presence of risk factors for symptomatic and asymptomatic infection with respiratory viruses Antibody and T cell kinetics of SARS-CoV-2 following infection Associations between the magnitude and quality of antibody and T cell responses to seasonal coronaviruses and protection from infection with SARS-CoV-2 Associations between infection with non-SARS-CoV-2 respiratory viruses and protection from infection with SARS-CoV-2 Associations between upregulation of gene expression in the mucosa, including interferon stimulated genes (ISGs), and protection from infection with SARS-CoV-2

The goal of this observational study is to learn about the influence of pre-existing mucosal immunity, i.e. antibodies and immune cells that are present at the nasal mucosa before infection, on the infectious viral load after infection with SARS-CoV-2 and influenza virus. We will include app 320 participants which will be followed for 6 months. We will monitor their nasal mucosal antibodies at regular intervals (once per month) and compare that to their infectious viral load if they are infected with SARS-CoV-2 and influenza virus.

The purpose of this study is for the research team to become familiar with and evaluate the technical and operational performance of the QuidelOrtho Savanna RVP4 analyzer by testing 120 archived specimens that were previously tested at the Wisconsin State Laboratory of Hygiene (WSLH) by RT-PCR and multiplex respiratory pathogen panel within the last year.

Epstein-Barr virus (EBV) is one of several herpesviruses that cause disease in humans. EBV virus has an oncogenic potential, and it has been associated with the development of a wide range of cancers. Previous studies have shown a close association between EBV and Post-Transplant Lymphoproliferative disorder (PTLD) in transplant recipients. As part of a preventive approach against PTLD, several transplantation units now monitor the occurrence of EBV-DNAemia after transplantation. However, there is little evidence to guide this strategy; nor is there consensus concerning either the best specimen to use for EBV analysis (whole blood or plasma). In this study investigators aim to optimise and validate a polymerase chain reaction (PCR)-test for EBV-DNA on, respectively, whole blood, plasma and a combination of plasma and lymphocytes. The investigators wish to determine which of the three tests best predicts current and future risk of development of EBV-related diseases such as mononucleosis and PTLD.

The purpose of this study is to determine whether raltegravir 400 mg b.i.d. in a boosted PI regimen is as efficacious and safe as the NRTI backbone in a boosted PI regimen.