Active clinical trials for "COVID-19"

This study is a prospective cohort study aimed to clarify the continuous immune state changes of patients with COVID-19. Investigators include the patients admitted to the hospital within one week after the onset of COVID-19. 10ml of patients' blood was collected day 1, day 7, day 14 , and day 20 after the patients admitted to the hospital. The blood inflammatory factors, immune related molecules, and immune cells were detected to determine the changes of patients' immune status. The impact of immune status changes on prognosis and quality of life in later follow-up period was evaluated by various questionnaires and evaluation scales.

Long COVID is defined by the persistence or emergence of symptoms for more than 4 weeks beyond the acute phase of Severe Acute Respiratory Syndrome-Corona Virus-2 (SARS-CoV-2) infection. As the number of cases increases and various strains of SARS-CoV-2 emerge, so does the number of long COVID cases. Various multi-organ complications after COVID-19 infection include respiratory, cardiovascular, gastrointestinal, hepatobiliary, metabolic, and neuropsychiatric disorders. The symptoms and characteristics of Long COVID vary in each country. Vaccination against SARS-CoV-2 has been documented to increase clinical resolution of Long COVID. In Indonesia, current full-dose vaccination coverage had merely reached 15.6% of the national vaccination target. This condition can be predictably associated with a longer duration and higher severity of symptoms in Long COVID patients. The purpose of this study is to provide an overview of the symptoms and characteristics and determine whether vaccination against SARS-CoV-2 could improve clinical outcomes and quality of life of Long COVID patients at Dr. Cipto Mangunkusumo General Hospital.

Background and objective From this April, there was a COVID-19 outbreak in Taiwan. The first fatal case of pediatric COVID-19 encephalitis was reported on April 19, 2022 and fatal fulminant cerebral edema in other 4 children with COVID-19 encephalitis was reported within 1 month from Taiwan CDC registry. To date, around 700,000 children got COVID-19 recently. Several children developed MIS-C (multi-system inflammatory syndrome in children)-related shock about 2-6 weeks after COVID-19. Since both COVID-19 associated encephalopathy/ encephalitis and MIS-C are life-threatening, it is urgent to delineate its prognostic biomarker, host genetic factors, immunopathogenesis and viral pathogenesis. Methods Pediatricians will enroll cases of both COVID-19 associated encephalopathy/ encephalitis and MIS-C from several hospitals and medical centers. Their clinical manifestations, lab findings, severity and outcomes will be collected. Clinical assessment of all the systems will be performed. Blood, nasopharyngeal swab and stool will be collected at acute, subacute and convalescent stages for whole exome sequencing, immunopathogenesis including chemokine/cytokine, T/B lymphocyte subset, SARS-CoV2 specific Ab/T/B cell, T and B cell repertoire, viral pathogenesis including multiple viral detection, persistence of fecal SARS-COVID-2 as well as respiratory and gut microbiota. We will establish the animal models for COVID-19 associated encephalopathy/encephalitis and MIS-C, based on the K18-hACE2 or R26R-AGP mouse models established in NTU animal center. Moreover, specific viral or host factors involved in regulating the pathogenesis and immune responses can be investigated, to optimize the protocol for further improvement of the animal models and also to help identify the putative therapeutic targets. Expected results We will delineate the clinical and laboratory characteristics of COVID-19 associated encephalopathy and encephalitis, the role of immune, virology, genetics mechanism in pathophysiology, and will optimize the treatment algorithm based on the result of this study. We also expect that the important biomarkers and risk factors associated with clinical outcome and severity, the immunopathogenesis of MIS-C, host genetic factors and the viral pathogenesis and microbiota associated with MIS-C will be found.

In order to limit the transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a significant numbers of measures were taken worldwide. It has been shown that the pandemic and its consequences, such as lockdown and isolation, can have a significant long-term impact on the well-being of children. This study follows the initial DYNAtracs study on SARS-CoV-2 transmission in primary schools. In Belgium, 2488 children and 444 school attenders in 11 primary schools of the Federation Wallonia Brussels are invited. Every participant will be invited to answer a well-being questionnaire. This study aimed to document the children and workers well-being in the primary schools of Belgium after the COVID-19 pandemic. The results of the study should contribute to improved decision making regarding measures for schools and children well-being in the context of current and future pandemics. The objective of this study is to document the well-being of children and workers after the COVID 19 pandemic in primary schools of the Federation Wallonia-Brussels.

This is a two-way (retrospective and prospective) study of COVID-19 infection in an observational cohort of patients with chronic hepatitis B treated with antiviral therapy. Patients with chronic hepatitis B who received anti-HBV treatment in the Second Department of Hepatology, Beijing Ditan Hospital Affiliated to Capital Medical University from February 2022 to December 2023 were enrolled. After enrollment, demographic data of patients, information on antiviral treatment of chronic hepatitis B, COVID-19 vaccination, COVID-19 infection and COVID-19 incidence and treatment from January 2022 to pre enrollment, and data on HBV virus and serology, clinical biochemistry, liver and lung imaging, COVID-19 nucleic acid and COVID-19 antibody examination of patients were collected. After enrollment, prospective anti-HBV treatment, HBV virology, clinical biochemistry, liver imaging and COVID-19 infection and morbidity were observed. The patients with COVID-19 infection during the prospective observation period were observed for COVID-19 infection, onset and treatment, including body temperature, clinical symptoms, signs, cardiac examination, pulmonary imaging, COVID-19, clinical biochemistry, disease severity, time of virus negative conversion, hospital stay and outcome. The influence of COVID-19 infection on liver disease and the influence of interferon anti-HBV treatment on COVID-19 infection, its pathogenesis and prognosis were studied.

To identify pulmonary vascular disease in post/long-COVID-19 patients as a cause of dyspnea/exercise limitation and to differentiate it from other causes of dyspnea

Since March 2022, there are an outbreak of SARS-CoV-2 infection (Omicron) in Shanghai. This cohort study aims to analysis the clinical outcomes of neonates born to mothers with SARS-CoV-2 infection.

The Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-COV-2) pandemic has resulted in more than 3.8 billion registered tests, 275 million positive cases, and 5 million deaths worldwide. Early and regular testing has been an important pillar of secondary prevention since the beginning. However, this pandemic has also fostered solutions in the form of e telemedicine with enormously increased applicability. The question of whether telemedically supervised testing with SARS-CoV-2 Rapid Antigen Tests is non-inferior to the same tests being carried out by trained personnel in test centers is still unanswered. With this study, the investigators aim to compare and evaluate the reliability and sampling quality of telemedically guided self-performed rapid tests for professional use compared to professional sampling by healthcare personnel. Our hypothesis is that, applying a strict standard operating procedure (SOP, attached), guided oropharyngeal + nasal (OP+N) self-sampling (GSS) is non-inferior to nasopharyngeal (NP) or OP+N sampling performed by health care professionals (HCP), and that guided OP+N sampling is superior to unsupervised OP+N self-sampling (USS).

In the absence of data on Electric impedance tomography of healthy spontaneous breathing patients that is compared to dyspnoeic patients suffering from postacute COVID-19 syndrome, the investigators contend that electrical impedance tomography provides additional clues to visualize regional lung ventilation and differentiate healthy from sick patients.

This is a tertiary care hospital-based prospective molecular epidemiology study in Montreal, Canada. When nosocomial transmission was suspected by local infection control teams' investigations, SARS-CoV-2 viral genomic sequencing was performed locally for all putative outbreak cases and contemporary controls. Molecular and conventional epidemiology data were confronted in real time to improve understanding of COVID-19 transmission and reinforce or adapt prevention measures.