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NCT04637867
There are still uncertainties about the existence of protective immunity and the duration of protective antibodies in patients infected with SARS-CoV-2. Serological testing is an appropriate tool for epidemiological investigations to assess the persistence of antibodies over time. The nature of the immune response induced by this virus is also poorly understood. This ancillary study aims at assessing the immunological characteristics of patients that participated in the NOSO-COR study at Hospices Civils de Lyon six and twelve months after the initial infectious episode. Two visits will be scheduled at 6 and 12 months (± 1 month) after the initial SARS-CoV-2 infectious episode, Blood, saliva and nasopharyngeal samples will be collected for seroprevalence and immunological investigation.
NCT04290780
Infection with the SARS-CoV-2 coronavirus strain is associated with severe morbidity and mortality estimated today from 2% to 4%. Elderly patients or patients with serious chronic conditions justifying hospitalization are particularly at risk. The risk of infection with SARS-CoV-2 during hospitalization is also substantial and increased in fragile patients. Several cases of infection among Healthcare Professionals had been reported. The hypothesis is that similar to the corona virus agent responsible for SRAS and the influenza virus, nosocomial outbreaks of SARS-CoV-2 to be feared. Health care professionals and caregivers are populations-at-risk as they are exposed in the community and can transmit SARS-CoV-2 to hospitalized patients, and are also exposed to hospitalized patients infected with SARS-CoV-2. Describing hospital-acquired cases and SARS-CoV-2 infection transmission chains in healthcare settings is vitally essential to achieve control of this epidemic. To improve the quality of care and patient safety, this data must be accompanied by an analysis of the impact of infection control measures. In addition, an effective infection control program is urgently required to control the spread of the virus and protect both uninfected patients who require care for other medical or surgical conditions as well as health care professionals. The main objective of this prospective, non-interventional - observational, hospital based study in adults and children is to describe and document suspected or confirmed cases of nosocomial SARS-CoV-2 infection, the clinical spectrum and the determinants (risk factors/protective factors) at participating hospitals. Characterization of the clinical features of the SARS-CoV-2 infection will help to identify potential sources of virus transmission as rapidly as possible and enable implementation of appropriate hygiene practices in hospitals.
NCT06379061
The purpose of the pivotal study is to collect blood specimens and clinical data from pediatric (\>90 days old) and adult (≥18 years old) patients presenting with signs and symptoms suggestive of acute bacterial or viral infection. These samples will be used to establish the diagnostic performance of MeMed BV™ for differentiating bacterial from viral infection using method comparison and/or method concordance.
NCT04332016
The coronavirus disease 2019 (COVID-19) outbreak is now considered as a public health emergency of international concern by the World Health Organization. In the context of the health emergency, research on the pathogen (the SARS-CoV-2 coronavirus), the disease and the therapeutic care is being organized. Research projects require the use of biological samples. This study aims at setting up a collection of biological samples intended for application projects in any discipline. The main objective of the study is to collect, process and store biological samples from patients and caregivers infected with SARS-CoV-2 (COVID-19) at the biological ressources center of the Bordeaux University Hospital.
NCT05711810
The clinical trial studies the human pathogen of SARS-CoV-2, with a specificity in the circulating Spike 2 protein in the human system. The clinical trial hypothesizes that SARS-CoV-2 human pathogen arises from immune attacks, underlying the severe physiological symptoms that can be lethal. It further hypothesizes that the vaccines do not deal with the Spike 2 protein that causes the immune attacks.
NCT04367740
Purpose: To determine the number of asymptomatic individuals who have antibodies to SARS-CoV-2, the virus which causes COVID-19
NCT04924842
Unlike other respiratory viruses such as influenza and RSV where the child is the essential reservoir and central vector of intrafamilial contamination, the child is likely to be a small player in the transmission of CoV2-CoRSA infection. This study aims to describe the age category of the first contact, within 14 days before the appearance of the first symptoms of the index case in order to describe the age categories of this first contaminant, globally, in the group of children and finally in the group of adults. This work is intended to provide food for discussion and to justify the distancing and containment measures imposed on children when their isolation has a deleterious impact that has now been established for some children.
NCT05026801
This is a randomized, double-blinded, Phase 3, multi-center trial of the clinical and microbiologic response of patients with a respiratory tract infection (RTI) due to coronavirus treated with a combination of azithromycin and hydroxychloroquine. Approximately 200 patients with symptoms of an RTI who test positive for SARS-CoV-2 by polymerase chain reaction (PCR) will receive a combination of azithromycin 500 mg and hydroxychloroquine 600 mg or matching placebos for six consecutive days. There will be two treatment regimens into which patients are randomized so that all patients will receive some active therapy.
NCT05041764
The aim is to compare the percentage of the different SARS-CoV2 lineages that are detected in wastewater samples with matched clinical samples. About 1,400 swab samples from patients living in Nice were tested by Biogroup between Oct 19th and Oct 23rd (Week 43 of 2020). The sequence of 81 PCR positive samples, corresponding to all samples that were unambiguously assigned to one of the wastewater catchment areas and their lineage was determined. These values were compared to values measured in wastewater.
NCT04782427
The medical charts of all COVID-19 cases (n=1200) from 17 long-term care facilities in Montreal, Canada will be reviewed, to compare patients who survived to patients who did not survive. Through multilevel logistic regression, the risk of death will be estimated for institutional predictors of mortality, while controlling for individual risk factors. Individual covariates include clinical features (age, sex, Charlston comorbidity index, SMAF autonomy score, severity criteria) and medical treatments (IV fluids, anticoagulation, oxygen, regular opiates, corticosteroids). Aggregate covariates include epidemiological data (attack rates, timing of outbreak) and institutional characteristics (number of beds, air exchange per hour, presence of a dedicated COVID-19 unit at the time of outbreak, staff compliance to infection control measures, staff infection rates, understaffing, proportion of semi-private rooms, proportion of wandering wards and other special units).