Randomized open label clinical trial carried out at study centers in Sweden, includingKarolinska University Hospital, S:t Göran Hospital, Danderyd Hospital and VästmanlandsHospital. Patients with COVID-19 who are hospitalized with oxygen therapy are eligiblefor inclusion. Subjects are randomized to 14 days of inhalation with ciclesonide 360 µgtwice daily or to standard of care. Primary outcome is duration of received supplementaloxygen therapy. Key secondary outcome is a composite outcome of death and receivedinvasive mechanical ventilation within 30 days.

Since December 2019, the Severe Acute Respiratory Syndrome-Coronavirus-2 (SARS-CoV-2)pandemic has spread around the world. The people most exposed to this virus remain thehealthcare personnel who are on the front line in the fight against this pandemic. Due tothe delayed nature of the pandemic in Reunion island and its insular geographicalsituation, the study of the voluntary medical personnel will allow the investigators toestablish a longitudinal follow-up of the anomalies of the lipidic balance in relation tothe exposure to the SARS-Cov virus. 2. During bacterial infections, the lipid profilesare profoundly modified with very significant reductions in plasma cholesterol levels,LDL-C but especially HDL-C whose concentrations are particularly low. Lipid profiles arealtered during viral infections, for example, the severity of dengue is inverselycorrelated with total cholesterol and LDL-C but not with HDL-C levels, according to arecent meta-analysis. The hepatitis C virus circulates in serum linked to lipoproteinsrich in triglycerides and HDL can facilitate its entry into cells via Scavenger receptorclass B type 1 (SRB1). Likewise, it has been shown that apoA1 can bind to the denguevirus and increase its infectivity by promoting its entry into cells, also via SRB1. Atthe moment, nothing is known about the lipid profiles in subjects with SARS-CoV-2. Theinvestigator hypothesize that a drop in plasma HDL-C levels and a change in their sizeduring infection could justify future therapeutic approaches aimed at supplementing thesubjects most at risk of pulmonary complications. In a model of Pseudomonas aeruginosapneumonia in mice, investigators have shown that the injection of reconstituted HDLallowed to limit the pulmonary inflammation and the deleterious consequences of theinfection. The investigator propose to study not only the lipid profiles in subjects whoare infected with SARS-CoV-2 but also the polymorphisms of genes involved in theregulation of lipoprotein levels like that of Cholesterol Ester-Transfer Protein (CETP)depending on the developed forms, symptomatic or not.

The spectrum of the COVID-19 disease ranges from benign to asymptomatic to viralpneumopathy that can progress to acute respiratory distress syndrome (ARDS). Thehost-pathogen relationships and the physiopathological mechanisms underlying the clinicalaggravation of COVID-19 patients remain misunderstood. The project aim is to create aprospective cohort of biological samples collected from well characterized COVID-19patients. This project aims first to identify based on these samples an early immunesignature predictive of clinical worsening of COVID-19 patients in order to improve theirmanagement, and secondarily to better understand pathophysiological mechanisms underlyingthe different phases of the disease in order to identify innovative therapeutic targetsand vaccine perspectives.

An increased risk of both venous and arterial thromboembolism was noted in reports fromSARS-CoV-2-infected patients in China and has been confirmed in autopsy findings frompatients who experienced sudden death. Myeloproliferative Neoplasms (MPNs), whichencompass polycythemia vera, essential thrombocythemia and primary myelofibrosis, arethrombophilic disorders with a natural propensity to thrombosis that is fuelled by theintrinsic activation of inflammatory cytokines. It therefore follows that an underlyingdiagnosis of MPN may increase the risk of worse clinical outcomes and death duringperiods of active Covid-19 disease. This ambispective, observational study aims toelucidate the key factors which affect the clinical course of patients with MPN whodevelop Covid-19 disease.

Nitazoxanide has been shown to have a clinical efficacy against severe acute respiratorysyndrome coronavirus 2; ivermectin has also demonstrated a remarkable experimentalefficacy with a potential to be used for Coronavirus disease 2019.

Oslo University Hospital has initiated an observational study on hospitalised patientswith confirmed COVID-19, the infection caused by Severe Acute Respiratory SyndromeCoronavirus type 2 (SARS-CoV-2).

RECOVERY is a randomised trial of treatments to prevent death in patients hospitalisedwith pneumonia.The treatments being investigated are:COVID-19: Lopinavir-Ritonavir, Hydroxychloroquine, Corticosteroids, Azithromycin,Colchicine, IV Immunoglobulin (children only), Convalescent plasma,Casirivimab+Imdevimab, Tocilizumab, Aspirin, Baricitinib, Empagliflozin, Sotrovimab,Molnupiravir, Paxlovid or Anakinra (children only)Influenza: Baloxavir marboxil, Oseltamivir, Low-dose corticosteroids - DexamethasoneCommunity-acquired pneumonia: Low-dose corticosteroids - Dexamethasone

The main objective of this multicenter cohort study is to determine the degree of COVID19infection immunization of a population of psychiatric patients.The secondary objective of this cohort follow-up is to: 1. Clinically characterize COVID patients who are positive for serological testing 2. Assess the socio-demographic, clinical and psychotropic determinants of a COVID diagnosis 3. Immunologically characterize COVID patients who are positive for serological testing 4. Exploring the links between susceptibility to COVID19 and erythrocytic blood groups

The purpose of the study is to design and execute a prospective, longitudinal,descriptive cohort study in a pragmatic clinical practice for adults with symptoms thatmay be related to COVID-19.

This is a PET/CT study using the 18F-αvβ6-binding-peptide.The goal of this study is toevaluate this peptide in patients after infection with SARS CoV2.