Active clinical trials for "Virus Diseases"

The aim of our study is to assess the analytical and clinical performance of the FilmArray (FA) BioThreat-E test (BioFire®) for the diagnosis of Ebola virus disease in the field in Guinea versus conventional molecular techniques.

Background: - Ebola is a lethal disease. A lot is still unknown about Ebola and its long-term effects. Researchers want to learn what ill health conditions Ebola survivors have. They want to learn if Ebola survivors can infect others in their household through close contact. They also want to learn if Ebola survivors are immune from getting Ebola again. To learn these things, they want to follow people in Liberia for 5 years. Objectives: - To learn how Ebola affects the health of survivors and the people they live with. Eligibility: - People in Liberia who had Ebola in the past 2 years, who share a household with someone who had Ebola, or who got ill and went to an Ebola Treatment Unit but were sent home because they did not have Ebola. Design: Participants will be screened with family illness history, physical exam, and blood tests. They may have an eye exam. Ebola survivors and those who went to a Treatment Unit but did not have Ebola will visit a clinic at 3, 6, and 12 months, then every 6 months for 5 years. At each visit, they will repeat the screening tests. Participants who live with someone who had Ebola will have only the screening visit. But they may be asked to return for follow-up visits. These visits will help researchers learn more about the differences between those who have had Ebola and those who have not. Participants brought to the NIH Clinical Center will have documentation of positive Ebola virus PCR and a clinical syndrome compatible with acute EVD. The study will last 5 years.

Respiratory Viral Infections (RVI) are particularly frequent in young children. Old data mention the deleterious role of some viruses such as the Respiratory Syncytial Virus in young children with cystic fibrosis (CF). However, recent epidemiological data on RVI in CF children are rare and the impact of most frequent viruses such as human rhinoviruses is usually not correctly evaluated. The aim of this study is to assess the frequency of lower and upper RVI during a 1 year follow-up in CF infants and to evaluate the impact of RVI at a clinical, microbiological and therapeutic level. Our hypothesis is that frequent and/or clinically severe RVIs have the worst impact in the short term and without any particular link with a specific virus as previously described.

Palatability testing of a new paediatric formulation of valacyclovir in children 4-12 years of age and at least one of their parents. Children will be included, who received (val)acyclovir prophylaxis in the past, or will probably need it in the future i.e. children with primary immune deficiency or cancer.

The purpose of this study is to collect epidemiological data in children and adolescents with chronic hepatitis B(CHB), in particular data on the prevalence of HBeAg positive disease with associated ALT levels , active HBeAg negative disease and decompensated CHB in the pediatric population. Family history and history of HBV transmission is essential to assess the course of the disease and can be used to determine the best mode of treatment This information will be used to assist with the feasibility and design of studies for the Novartis clinical pediatric development program, as the current epidemiology of ediatric CHB is not accurately known in Western countries or the rest of the world making pediatric studies difficult to plan and conduct. This study forms part of the Novartis Pediatric Investigational Plan, a post marketing approval commitment to the EMEA Pediatric Committee.

Published data by the Organización panamericana de la Salud shows that Peru's mortality rate from acute respiratory infections (ARI) in infants less than one year of life is second only to Haiti (14,150/100,000). Government data reports shows a marked increase of RSV infections in Peru. "Instituto Nacional de Salud" (Peru's National Institute of Health) reports between January 1st to February 26th 2006, 62% of their positive samples corresponded to RSV. Epidemiological data from Lima-Peru, demonstrates that there is no specific season for RSV infection although some data suggest an increase in RSV activity during cold months (May to September; INS data). Clinical studies show that giving five doses of Synagis (palivizumab) resulted in serum concentrations > 30 ug/mL for >20 weeks. The aim of this post-marketing observational study is to determine the RSV hospitalization rate in high-risk infants who received Synagis (palivizumab) through the Social Security Hospitals in the context of routine clinical practice.

In this project, the investigators aim to study the role of biliverdin reductase A (BLVRA) in HCV infected patients prior and during/after standard antiviral therapy in association with viral clearance, disease progression and treatment response and in comparison with healthy subjects.

This study is a preliminary investigation of immune responses, in the blood and in cervical & vaginal secretions, to proteins ("antigens") taken up across the undersurface of the tongue.

This study will examine how West Nile virus (WNV) infection affects the body. Some people infected with WNV have no symptoms. In others, symptoms may vary from fever and headache to a polio-like syndrome with paralysis, to coma and brain changes like those of a stroke. Many patients recover with no lasting effects, while a few can have long-lasting neurological damage or may die. This study will collect clinical, laboratory, diagnostic, and radiographic information on people thought to have WNV to better understand the disease. Patients 18 years of age and older diagnosed with or suspected of having West Nile virus infection may be eligible for this study. Patients will be hospitalized until they are well enough to go home and will undergo the following tests and procedures: Medical history and physical examination: A thorough history and physical examination will be done on the first day of the study. Then, brief physical exams, including measures of blood pressure, heart rate, breathing rate, and temperature, will be done during each day of hospitalization and at every follow-up clinic visit (at 2 weeks and at 1, 3, and 6 months). Blood tests: Blood samples will be collected on the first day of the study, at day 7, at hospital discharge, and at follow-up visits to determine if virus remains in the blood and how it is affecting the body. Magnetic resonance imaging (MRI): MRI scans will be done within 72 hours of beginning the study and 1 month after that. This test uses a strong magnetic field and radio waves to produce images of the brain that might show abnormalities in the brains of patients with WNV and reveal whether the abnormalities can predict how an individual will recover. For the procedure, the patient lies on a table that is moved into the narrow tunnel-like scanner. During the procedure, a contrast agent that brightens the images is injected through a catheter placed in an arm vein. Neurological examination and neurological function tests: Participants will be tested to see if the West Nile virus has affected their thinking and ability to perform normal daily activities. These tests will be done at the start of the study, on days 3 and 7 (also days 2, 4, 5, and 6 if patients are still in the hospital), at discharge, and at follow-up visits. The tests involve answering a number of questions and performing simple tasks, such as squeezing a hand or lifting a foot. Patients who develop weakness in their arms or legs will also have the following studies: Electromyography (EMG) to study the electrical activity of the muscle. For this test, needles are placed into a muscle to record the electrical activity at that site. Nerve conduction studies to measure how well the nerves are working. A small charge of electricity is delivered to a nerve in the affected limb, triggering a muscle to tighten or bend. Small wire electrodes are attached to the skin to measure the time is takes for the nerve to move the electrical current from one part of the limb to another. Spinal MRI to see if the virus is affecting the spinal cord. Results of other tests done by the patient's local doctor (such as lumbar puncture, electroencephalogram, x-rays, etc.) will be requested. If a lumbar puncture is done, a small amount of cerebrospinal fluid will be requested for testing for WNV.

West Nile Virus causes an infection that is spread to humans when bitten by certain types of mosquitoes. Mosquitoes become infected by biting infected birds. The purpose of this study is to find out more about West Nile Virus, which may assist in the design of better treatments. The study will be looking at the effects of the disease on individuals, specifically their nervous systems, and the outcomes of the disease. Study participants will include 120 adults ages 18 and older, who have either a fever and/or changes in their neurological (involving the brain and nervous system) status due to documented West Nile Virus infection. Study procedures will include physical examinations, blood tests, urine tests, cerebral spinal fluid (fluid in and around the brain and spinal cord) tests, and neurological (nervous system) testing. Study participants will be followed for 12 months.