Active clinical trials for "Infections"

The COVID-19 pandemic is a global emergency threatening to take millions of lives in the United States and around the world. There is no current vaccine strategy against COVID-19 infection caused by a novel coronavirus named SARS-CoV-2. Studies with a related coronavirus called SARS-CoV-1 that caused the SARS outbreak in 2003 indicated that memory CD8+ T cells recognizing viral epitopes persisted for more than 6 years post infection while neutralizing antibodies and memory B cells were short-lived and were undetectable after a short period of time (Tang et al., 2011; Peng et al., 2006; Channappanavar et al., 2014). Thus, including viral epitopes that are recognized by memory CD8+ T cells is imperative for vaccines that can provide long-term immunity against SARS-CoV-2. In this study, blood samples from COVID-19 patients who have recovered from the infection will be used to identify the viral epitopes recognized by their memory CD8+ T cells. This will be accomplished using a genome-wide, high-throughput screening technology developed at Harvard Medical School (Kula et al., 2019) and licensed by the study sponsor, TScan Therapeutics. A 24,000-member library that tiles across all ~100 viral isolates of SARS-CoV-2 that have been sequenced so far has already been synthesized at TScan. Blood samples from convalescent patients are urgently needed to identify T cell receptors and immunogenic viral epitopes on SARS-CoV-2. It is the hope that these data will inform development of a vaccine with the potential for long-lasting protection against SARS-CoV-2.

People with cancer may be at higher risk of poor outcomes with COVID-19 infection. This observational study aims to describe the clinical course of COVID-19 infection in people with cancer and evaluate the utility of antibody and antigen tests for COVID-19. The results of this study will inform clinical practice in the management of cancer patients with COVID-19.

Since the onset of the COVID-19 pandemic, the importance of chest computed tomography (CT) in detecting signs of viral pneumonia has become clear from the literature. However, the increased patient flow creates an additional pressure on CT centers. We believe, the use of chest magnetic resonance imaging (MRI) can help to test patients for CОVID-19 when CT scan is not available. Lung MRI may be useful in routing a patient in a difficult epidemiological situation.

This is a multi-center prospective study that aims to investigate the clinical and immunologic impact of SARS-CoV-2 infection in pregnant women and neonates. The goal is to recruit 200 SARS-CoV-2 infected pregnant women starting at 24 weeks of gestation in a neonatal network of 45.000 birth a year. Clinical data will be collected from women and neonates. Upper airways samples will be obtained from both for bio-markers investigation. Finally, maternal and umbilical cord serum and human milk will be obtained for antibody assessment.

Background Rapid European COVID-19 Emergency Research response (RECoVER), is a project involving 10 international partners that has been selected for funding by the European Union under the Horizon 2020 research framework responding to call topic SC1-PHE-CORONAVIRUS-2020: Advancing knowledge for the clinical and public health response to the SARS-CoV-2 epidemic. MERMAIDS 2.0 is the hospital care study within RECOVER. Rationale Detailed patient-oriented studies are needed to determine the spectrum of SARS-CoV-2 disease and the combined influences of age, comorbidities and pathogen co-infections on the development of severe disease, together with virological and immunological profiles. This research is key to understanding the pathophysiology and epidemiology of this new disease, as well as to identifying potential targets for therapeutic or preventive interventions. Objective To establish the prevalence, disease spectrum and severity, clinical features, risk factors, spread and outcomes of novel 2019 coronavirus infection (SARS-CoV-2) in Hospital Care. Study design Prospective observational cohort study in selected European countries. Study population Children and adults with 1) acute respiratory illness (ARI) presenting to hospital care during the SARS-CoV-2 epidemic (including both COVID-19 and non-COVID-19 patients) and 2) patients with confirmed COVID-19 infection, but with atypical presentation (non-ARI) or with nosocomial acquisition. Sites can optionally participate in the following tiers: Tier 1 (Clinical data and biological sampling) - Clinical samples and data will be collected on enrolment day and then at scheduled time points. Tier 2 (Clinical data an extended biological sampling). - incl. PBMC collection Optional add-on study In a subset of sites and patients, COVID-19 positive patients will be followed post-discharge for 6 months to study clinical recovery and long-term sequelae Main study parameters/endpoints: Prevalence of COVID-19 among patients with acute respiratory illness. COVID-19 disease spectrum and host and pathogen risk factors for severity. Long-term sequelae of COVID-19 requiring hospital care. Proportion hospital-acquired COVID-19 infections and characteristics of nosocomial transmission. Study Duration Scheduled 2 years and based on COVID-19 dynamics. Nature and extent of the burden associated with participation, benefit and group relatedness This study is observational in nature. There will be no direct benefit to research participants. The study may include biological sampling in addition to sampling required for medical management. The results of the tests done on these samples may not contribute to improving the participant's health. Minimal inconvenience and discomfort to the participant may arise from study visits and biological sampling.

Prosthetic joint infections (PJIs) are one of the main causes of implant failure after joint arthroplasty. Identification of the causal organism is crucial for successful treatment. However, microbiological diagnosis of PJIs remains a challenge notably because bacteria are embedded in biofilm adhered to the material. Recently, dithiothreitol (DTT) treatment of prosthesis has been proposed as a new strategy to dislodge bacteria from biofilm, thus becoming an alternative to sonication to improve the yield of the microbiological diagnosis. In this study, the investigators evaluate the interest of a commercial device using DTT, the MicroDTTect system (Heraeus, Hanau, Allemagne), for the diagnosis of low-grade chronic PJIs compared to the conventional culture of periprosthetic tissue (PPT) samples.

The microbiome of 80 orthopedic-device related infection (ODRI) patients treated with antibiotics and 10 healthy controls will be investigated. Samples (blood, stool, saliva, skin-swab) are collected 4x within 6 months. Composition and diversity of the microbiome will be assessed by 16sRNA sequencing, skins swabs are screened for rifampicin-resistant staphylococci onto Mannitol-salt-agar plates supplemented with rifampicin, inflammation markers and antibodies in blood and saliva are monitored to track changes in the immune response. For further analysis patients are assigned to one of two groups: 1) antibiotic therapy including rifampicin and 2) non-rifampicin antibiotic therapy.

Observational cohort study aiming at comparing the incidence of ventilator-associated lower respiratory tract infections between COVID-19 patients and two control groups: one with influenza pneumonia and the other with no viral pneumonia.

This study is a multi-center study with a minimum of three CLIA-waived intended operator sites in the United States in which prospectively self-collected vaginal specimens obtained from subjects who are symptomatic or asymptomatic for CT, NG, or TV will be evaluated with the Click Sexual Health Test in a Clinical Laboratory Improvement Amendments (CLIA) waived setting. Subjects interested in participating in this study will be assessed for eligibility and asked to give informed consent and assent, if applicable, by the Investigational Review Board (IRB). Only those subjects who meet the inclusion and exclusion criteria may be enrolled in the study.

Introduction: Surgical site infections associated with the cochlear implant can have serious consequences. Although advances in surgical techniques reduce these complications, it may be necessary to remove a device that works as a last resort as a result of ongoing infection. The removal of these devices, which are very expensive, increases the cost and takes the chance of hearing patients with this device. Therefore, it is very important to identify patients with a tendency to cochlear implant infection before surgery and to prevent these infections from occurring. Neutrophil/ lymphocyte ratio (NLR) and platelet/ lymphocyte ratio (PLR) are indicative of systemic inflammation and have a prognostic value in relation to mortality and morbidity in many diseases. The aim of this study was to identify patients with post-operative implant infection tendency in patients to be implanted with cochlear implant and to plan treatment for possible infections before cochlear implant, to reduce cost by preventing removal of implanted cochlear implant due to infection and to prevent the patient's chance of hearing through the cochlear implant from disappearing due to infection. Methods: In this retrospective study, 13 patients with cochlear implant infection were included. Preoperative NLR was calculated by dividing the neutrophil (NEU) value by the lymphocyte (LYM) value and preoperative PLR was calculated by dividing the NEU value by the LYM value.