View clinical trials related to SARS-CoV Infection.
Filter by:The physical inactivity promoted by the patient's hospitalization, including those infected with the coronavirus, can lead to an important health impairment, including atrophy and loss of muscle function. Thus, a prospective study will be conducted to assess the effect of a home-based exercise training program on health outcomes and quality of life in COVID-19 survivors.
This project will provide novel data using a large cohort of more than 3000 transplanted patients. Risk and protective factors for SARS-CoV-2 infection and COVID-19 disease severity will be identified. The proportion of patients who develop antibodies after infection will be revealed. In this way the presence of these antibodies can be evaluated as a test for prior infection. Our study additionally will demonstrate how long these antibodies remain present and whether they are protective against a new infection.
A new strain of coronavirus that caused severe respiratory disease in infected individuals was initially identified in China's Wuhan City in December 2019. Severe acute respiratory distress syndrome coronavirus-2 (SARS-CoV-2), which was responsible for the corona virus infectious disease-2019 (COVID-19).The World Health Organization declared that COVID-19 was a Public Health Emergency of International Concern on January 30,2020. The impact of COVID-19 in liver recipients remains largely unknown but accumulating experience is going on. Liver transplant recipients should have been classified as a risk group and should have received regular surveillance for COVID-19 throughout the pandemic. Some reports suggest decreasing immunosuppression for infected recipients, if no recent rejection episodes. Paradoxically, others suggest that a reactive immune response might be the cause for severe tissue damage, and that immunosuppression might be protective from the postulated cytokine storm. Some studies stated that the LT patients who are permanently on immunosuppressants could be particularly susceptible to SARS-CoV-2, and their prognosis could be worse in comparison to the normal population. They recommended that LT recipients should be closely monitored for SARS-CoV-2. The LT society of India (LTSI) highlighted the potential of LT recipients as asymptomatic carriers and source of viral spread, and that SARS-CoV-2 can be transmitted to LT recipients. There are insufficient data on the relationship between immunosuppressive therapy and COVID-19 in LT recipients during this pandemic. However, the Beijing working party for liver transplantation suggested that LT recipients who were infected with SARS-CoV-2 should be treated with steroids for a short period to reduce the severity of pneumonia. They also suggested that immunosuppressive therapies should be continued for both patients with mild COVID-19 and those who were not infected by the virus, and calcineurin inhibitor treatment dosage should be reduced in moderate to severe cases. Neutralizing antibodies (NAbs) play an important role in virus clearance and have been considered as a key immune product for protection or treatment against viral diseases. Virus-specific NAbs, induced through either infection or vaccination, have the ability to block viral infection. SARS-CoV -2 specific NAbs reached their peak in patients from day 10-15 after the onset of the disease and remained stable thereafter in the patients. Antibodies targeting on different domains of S protein, including S1, RBD, and S2, may all contribute to the neutralization. Al-Rajhi Liver Center is the only liver transplantation center in Upper Egypt that performed only 51 living donor liver transplantation (LDLT) cases since 2014, but it was used as isolation Hospital for COVID-19 cases from March to July, 2020. Communication with liver transplant cases during that period was via Telemedicine. Resuming usual Hospital activity as Tertiary Liver Center occurred in 15 August 2020. Similarly, other Hospitals in Egypt were designated as COVID-19 isolation Hospitals.
Many non-invasive ventilatory choices are available for COVID-19 patient who are having mild to moderate respiratory distress and their use will decrease the chance of ICU admission, intubation and mechanical ventilation in severe cases of COVID-19. However, all these respiratory supports and oxygen supply devices are aerosol generating and their selection should be precised enough to control nosocomial spread. High flow nasal cannula HFNC is a device that delivered the warmed and humid air on high flow rate through nose. It is used to treat severe respiratory distress in COVID-19 patients, a non-invasive ventilatory approach which is relative comfortable by using humidified and pre-heated air containing large concentration of oxygen. In acute respiratory failure HFNC is proven to be very effective and it also reduced the need of mechanical ventilation in severe patients. Apart from the supply of oxygen, HFNC generating positive airway pressure and decreasing the rebreathing from anatomical dead space. Prone position is also a save therapy and has been proven to be effective for refractory hypoxia by increasing tidal volume, oxygenation and diaphragmatic functions in ARDS patients. Recent studies showed that prone positioning and HFNC might avoid the prerequisite of intubation in moderate to severe patients of ARDS and as a result it decreases the nosocomial infection in physicians who are doing these aerosol generating procedures.
Remdesivir is a monophosphoramidate prodrug of an adenosine analogue and it has a broad-spectrum antiviral activity against paramyxoviruses, falviviruses and coronaviruses. It showed in vitro activity on human airway epithelial cells against SARS-CoV-2. It is an investigational drug and granted an Emergency Use Authorization by Food and Drug Administration FDA, so it is under clinical trial. The potent mechanism of action of this drug is still unclear but it effects through several processes. It can interfere with nsp12 polymerase even when exoribonuclease proofreading is intact. It can also produce nucleoside triphosphate NTP that acts pharmacologically active alternate substrate of RNA-chain terminator, as a result NTP can constrain active triphosphates into viral RNA of coronaviruses. There is evidence of high genetic barrier to develop resistance against Remdesivir in coronavirus as a result of which is maintains its effectiveness in antiviral therapies against these viruses. Effectiveness of Remdesivir has been reported against different groups of coronaviruses including Alphacoronavirus NL63 and several SARS/MERS-CoV coronaviruses.
The most accepted description of severe COVID-19 disease is development and over production of pro-inflammatory cytokines. Autopsy studies have been done on COVID-19 patients proved that severe disease is resulted due to deviant host-immune response and cytokine storm. Elevated inflammatory biomarkers like C-Reactive protein (CRP) and pro-inflammatory cytokines shown to be higher in severe disease of COVID-19. Several studies on severe COVID-19 have revealed raised levels of plasma cytokines like IL-6, IL-2, IL-10, Gamma interferon (INF), Tumor necrosis factor Alpha TNF. The Cytokines release syndrome (CRS) is a hyperinflammatory deadly syndrome characterized by release of uncontrolled immune system activation which is responsible for multi-organ failure. It has the main role in ARDS due to SARS-CoV-2 virus which binds to alveolar epithelium and resulting in IL-6 release that is responsible for increase alveolar-epithelium permeability. In many studies it has been observed that IL-6 have played a main role in CRS induction. Previous experiences from hyperinflammatory and cytokine storm syndromes recommends that early involvement of inhibiting CRS is essential to prevent lethal tissue damage and poor clinical outcome. In this scenario the judgement of clinical specialist who are suggesting that evidence of CRS can be cured with glucocorticoids, I/V immunoglobulin and anti-cytokine therapy cannot be ignored.
In COVID-19 deep airway and alveolar destruction occurred due to inflammatory reaction resulting into severe pneumonia. In COVID-19, lung injury is not only due to viral damage to tissue, but it is also due to immune response that leads to activation of inflammatory cells and release of cytokines. In COVID-19 acute respiratory distress syndrome ARDS is produced due to mucinous or cellular fibromyxoid exudates, desquamation of pneumocytes and alveolar damage and hyaline membrane development and within 5-7 days disease become more aggressive due to pneumonia and respiratory failure. It is important to start the prompt and strengthen treatment for suppression of inflammatory response and cytokine storm. Methylprednisolone are the traditional immunosuppressive drugs. They are important and effective to delay the pneumonia progression and treating the ARDS. Corticosteroids are broadly used as treatment for ARDS and there was an evidence for its efficacy for treating SARS and decreasing mortality of SARS in the past. However for COVID-19 corticosteroids efficacy and safety usage is still under clinical trials
The Paris Fire Brigade staff have been particularly exposed to COVID-19 due to rescue and care activities for victims at risk in Paris area (where the virus was actively circulating). In addition, when the pandemic began in France, they had to take care of patients before procedures to protect caregivers were implemented. The contamination of young military personnel, whose physical capacity was put into strain at work, raises the question of the consequences of COVID-19 on their physical fitness. At the time, the medium- and long-term evolution of this disease and its possible repercussions on physical fitness are unknown. Moreover, like any soldiers who have been confined, they may present at least a cardio-respiratory deconditioning (sometimes independent of the disease making it difficult to distinguish between a sequelae of the infection or rehabilitation). Based on previous coronavirus epidemics (Sars-Cov 1 and Mers-Cov), it appears that long-term sequelae are possible even in mild forms and can result in an alteration of exertion ability. In the current context and in the absence of national or international recommendations on the return to physical activity, the French Armed Forces Health Service has proposed a simple management plan aiming at: i) allowing mass screening for possible exercise intolerance and targeting at-risk personnel, ii) allowing individualized re-training and iii) guaranteeing that military personnel can carry out their mission without jeopardizing their health.
In this prospective longitudinal cohort the investigators reported the clinical, and biological characteristics of all critically ill patients admitted in the pediatric intensive care unit (PICU) of Bicêtre Hospital during the 2019 coronavirus disease (COVID-19) pandemics. Patients were older than 37 weeks of gestational age. No upper limit was set as the unit was transiently converted into a pediatric "adult COVID-19" intensive care unit.
In this prospective observational study, a quantitative and qualitative analysis of antibiotic prescriptions for presumed respiratory tract (super)infection in patients hospitalized on COVID-19 wards will be made. Drivers of antibiotic prescription for presumed respiratory tract infection in patients suspected of being infected with COVID-19 or with definite COVID-19 infections will be identified.