View clinical trials related to Viral Infection.
Filter by:We hypothesize that a high CD4+ and CD8+ T cell count will reduce viremia upon challenge with a structurally heterologous virus, and correspondingly result in reduced magnitude of host response to challenge infection. Primary Objective: To compare, after challenge with a structurally heterologous vaccine, the differences in levels of viremia between healthy adults who received primary vaccination with either YF17D vaccine, chimeric JE-YF17D vaccine, or inactivated JE vaccine. 58 subjects will be randomised into 1 of 2 arms (Arm B1 and Arm B2) in a 1:1 ratio, in a double-blind fashion. Subjects in Arm B1 will receive JE-YF17D vaccine (Imojev, Sanofi Pasteur) on Day 0 followed by YF17D vaccine (Stamaril, Sanofi Pasteur) on Day 28. Subjects in Arm B2 will receive Stamaril on Day 0 followed by Imojev on Day 28. Arm B3 will be conducted as a separate single-arm open label design in 14 subjects. Subjects in Arm B3 will receive inactivated JE vaccine (Ixiaro, Valneva) on Day 0 followed by Stamaril on Day 28. The rationale for these three study arms is as follows: Arm B1 will show the impact low levels of viremia, and the resultant low levels of virus-specific CD4+ and CD8+ T cells, would have on YF17D infection. In contrast, YF17D vaccination in Arm B2 would produce high levels of viremia, and in turn high levels virus-specific T cells, thus likely ameliorating JE-YF17D infection. Arm B3 will serve as the control arm, as vaccination with inactivated JE vaccine would not produce any YF17D-specific T cell response. Notably, the first vaccination in Arms B1 and B2 would also provide the viremia response in the absence of virus-specific T cells, which would serve as a reference point to interpret the outcome of the second vaccination.
Rapid diagnosis and precise treatment have become possible with multiplex polymerase chain reaction (PCR) panels that can identify a variety of causative agents of acute respiratory illnesses such as bacterial and viral infections in one urgent care visit. While real-time PCR is currently used as a standard for diagnosing acute respiratory illnesses such as influenza due to its high sensitivity and specificity, it typically takes several hours for results which is unfavorable in the urgent care setting. Highly sensitive and rapid random-access PCR tests provide the sensitivity and specificity needed to both rapidly and accurately diagnose acute respiratory illnesses. Similar PCR panels have been used in previous research for the diagnosis of gastrointestinal illnesses in the emergency department and point-of-care testing for hospitalized adults presenting with acute respiratory illness. In this study, the investigators aim to determine if a rapid multiplex PCR test for urgent care patients with symptomatic upper respiratory infections can improve patient and provider-reported outcomes. This study utilizes the Biofire® FilmArray Panel (RP2.1-EZ) which in previous studies has been shown to be highly effective in diagnosing acute respiratory illnesses.
The study aimed for: 1. Comparative evaluation of the safety of the drug Molnupiravir, capsules, 200 mg (JSC "Valenta Pharm", Russia), and Lagevrio, capsules, 200 mg (Merck Sharp & Dohme (UK) Limited, UK), based on the analysis of adverse events (AEs); 2. Comparative assessment of pharmacokinetic parameters and bioequivalence of the drug Molnupiravir, capsules, 200 mg (Valenta Pharm JSC, Russia), and Lagevrio, capsules, 200 mg (Merck Sharp & Dohme (UK) Limited, UK), in healthy volunteers in fasted conditions.
Audit and Feedback (A&F), a strategy aimed at promoting modified practice through performance feedback, is a method to change provider behaviour and reduce unnecessary medical services. This study aims to assess the use of A&F to change: 1. antibiotic prescribing for viral infections 2. antipsychotic prescribing to patients with dementia 3. routine measure of vitamin D in low risk adults 4. annual screening blood tests (without direct indication by the risk profile of the patient)
Background: Many adults and some children with COVID-19 or acute respiratory infection become critically ill and need advanced life support in the Intensive Care Unit (ICU). Frailty is a medical condition of reduced function and health. Adults with frailty have a lower chance of surviving critical illness. The investigators are still learning about critically ill adults with COVID-19 or acute respiratory infection, and do not have much information on how frailty affects outcomes in critically ill children, with or without COVID-19 or acute respiratory infection. Rehabilitation can help survivors of COVID-19 or acute respiratory infection by improving strength and improve quality of life (QOL). Objectives: The main goal of this research study is to see if patients with frailty have a lower chance of surviving COVID-19 or acute respiratory infection critical illness and more health problems after survival than patients without frailty. The investigators will also study the types of rehabilitation received by patients with COVID-19 or acute respiratory infection. Methods: The investigators will include adults and children with COVID-19 or acute respiratory infection who are admitted to the ICUs that participate in the study. The investigators will gather data about each patient, including before and during their illness. Outcomes: The investigators will collect level of frailty, function, and types of therapy, or rehabilitation received by patients. In adults, the investigators are most interested in learning if frailty influences mortality, or death. In children, the investigators are most interested in whether children with COVID-19 or acute respiratory infection critical illness are more likely to develop frailty. The investigators will also study post-hospital discharge location in survivors (e.g., home, rehabilitation). Relevance: The COVID-19 pandemic is a global public health crisis. It is critical to understand how COVID-19 and other acute respiratory infection critical illness affects groups of people who are at higher risk, and the impact on outcomes that are important to patients, like functioning and QOL. The results will help policy makers plan post-hospital services for survivors, help healthcare workers understand the importance of rehabilitation practice for patients with COVID-19 or acute respiratory infection, and help researchers develop treatments to improve QOL after COVID-19 or acute respiratory infection.
This study seeks to identify and test host RNA expression profiles in context to protein biomarkers in dried blood spot samples as novel diagnostic markers of neonatal herpes simplex virus infection and to improve the understanding of the pathogenesis of the disease.
World increase in mortality from consequences of antimicrobial resistance (AMR) represents a significant public health problem. Irrational prescribing of antimicrobial drugs (AMD) in general population is one of the main causes of development AMR. This is also contributed by fact that up to 90% of total antimicrobial consumption in Europe is related to the general population. Problem of AMR has been recognized by World Health Organization and Council of European Union, which support the establishment of the antimicrobial stewardship team (A-team). A-team provides co-ordinated interventions that promote rational use of AMD. To date, no study has been carried out in which A-team from hospital environment goes to primary health care for the purpose of rationalization prescribing of AMD by primary health care practitioners. Project for implementation of hospital A-team in primary health care in Koprivnica-Križevci County was initiated using academic detailing method aimed at rationalization of the consumption of AMD.
This is a two-arm, randomized, open label, monocenter, controlled study to evaluate the safety and efficacy of Viusid plus Asbrip in patients with mild and moderate symptoms of respiratory illness caused by Coronavirus 2019 infection.
This study seeks to identify and test host RNA expression profiles as markers for infections in young infants. Preliminary studies have shown high sensitivity and specificity for the discrimination of bacterial from non-bacterial infections in children, but the method has only been investigated in a limited number of young infants. The study aims to include 65 young infants with serious bacterial infections. The samples will be analysed by RNA sequencing. New diagnostic tools may help reduce unnecessary antibiotic treatment, antibiotic resistance, side-effects, hospitalisation and invasive procedures.
Acute upper respiratory tract infection(AURI) is common in children, and viral infection is the main cause. However, several children with viral infection are easy to suffer from secondary bacterial infection, and the mechanism is unclear.