Active clinical trials for "Severe Acute Respiratory Syndrome"

Effectiveness of the use of Tenofovir/Emtricitabine in addition to personal protective equipment for the prevention of the transmission of SARS-COV-2 to health care personnel. A Randomized Clinical Trial. This is an experimental study whose aim is to evaluate the effectiveness of a drug to prevent infection with the virus that causes COVID-19 (SARS-CoV-2), in health care workers. The drug under study is Tenofovir /Emtricitabine, a well-known antiretroviral, which is safe and is used as prophylaxis and treatment for HIV and other viral infections such as Hepatitis. Several laboratory-based studies indicate that this drug has the potential to inhibit SARS-CoV-2 replication. In addition, one study in HIV infected persons found that those taking Tenofovir /Emtricitabine tended to have a lower occurrence of COVID-19. In this study, we will compare the occurrence of infection with SARS-CoV-2/ COVID19 in health care workers between those assigned to an intervention group and those assigned to a control group. The intervention group will receive Tenofovir /Emtricitabine during 60 days in addition to the use of personal protective equipment (PPE), and the control group will receive a placebo during 60 days in addition to the use of personal protective equipment (PPE). The study will recruit 950 health professionals above 18 and less than 70 years, working in the emergency room, COVID wards and intensive care units of seven hospitals in Colombia. To make the comparison groups very similar, the participants will be assigned through a random mechanism to either the intervention (475), or the control (475) groups. In order to prevent biases in the evaluation of the results, neither the participants nor the clinical investigators, data managers, analysts and support personnel will know which intervention the participants are receiving. To determine the occurrence of infection with the virus the study will use both molecular tests that detect the presence of viral genes in respiratory secretions, and serological tests that detect the response of the immune system to the virus. The study will evaluate also the safety of this drug determining the occurrence of adverse events.

In light of the current coronavirus disease 2019 (COVID-19) pandemic, the investigators want to better study the immunological characteristics of Severe Acute Respiratory Syndrome-Coronavirus 2 (SARS-CoV2) infections in adults. The investigators invite volunteers to participate in a clinical study to better understand what happens after an infection with SARS-CoV2. By collecting and analysing blood samples of people that were infected, the investigators want to evaluate whether or not the participants had an adaptive immune response with the producting of immunoglobulin. The investigators will evaluate the quality of the antibodies and their neutralising capacity. In a selected patient group with strong antibody response, the investigators will try to reproduce them in the lab after the collection of a larger blood sample (max 72 mL) of, in case of insufficient B-cells, a leucapheresis (after consent of the patient). These antibodies can be used in clinical trials to evaluate whether the investigators can cure patients faster or prevent disease by the utilisation of these antibodies. Aside from the aforementioned information the investigators will also collect clinical data such as: demographic information, medical history, routine lab results, radiographic imaging and medication use. After the completion of the study, the samples will be stored for 30 years with consent of the participants.

Although the Covid-19 infection mainly manifests itself with respiratory symptoms, as early as two months after the onset of the pandemic, the presence of other symptoms, including muscle ones, became clear. With the disappearance of the emergency and the advancement of knowledge, medium- and long-term effects have been reported at the level of different organs and systems. Many patients, after several months from infection, report intolerance to exercise and many suffer from pain and muscle weakness. No studies has been carried out on the muscular consequences of the infection and on their possible contribution to intolerance to exercise. Since skeletal muscle possesses the ACE2 receptor (Angiotensin converting enzyme 2) to which SARS-Cov-2 binds, it follows that the involvement of the skeletal muscle could be due not only to the secondary effects of the infection (e.g. reduced oxygen supply from persistent lung disease, perfusion defects from cardiovascular defects and vascular damage), but also to the direct action of virus (SARS-Cov-2 myositis). The general purpose of the research is to quantify the spread of symptoms and signs of muscle weakness and pain among the patient population welcomed at the Cardiorespiratory Rehabilitation Department of the Alexandria Hospital which have been suffering from SARS-CoV-2, being discharged and healed for more than two months, and define the possible contribution of muscular modifications to exercise intolerance.

The principal aim of this interventional, multicentre study is to compare the impact of a follow-up by monthly telephone dietetic consultations, started 3 months after discharge from hospital, for a period of 3 months, on the energy intake in patients elderly people recently hospitalized for Coronavirus disease 2019 (Covid-19), Coronavirus disease Positive group "Covid (+)", or not, Coronavirus disease Negative group"Covid (-)". The main outcome measure is to compare the total energy intake at 6 months, after 3 months of dietary consultations, between Coronavirus disease Positive group "Covid (+)" and Coronavirus disease negative group "Covid (-)".

Coronavac, one of the vaccines developed within the scope of combating the COVID-19 pandemic that has surrounded the world for a year, started to be applied in the first healthcare workers in our country. In this important step taken to end the pandemic, information on vaccines is still limited. Most vaccines, including the Coronavac vaccine, are applied with approval for emergency use before phase 3 studies are fully completed. While investigating the effect of the vaccine on the virus, possible side effects should also be considered. In this context, it is not known whether the vaccine has an effect on the menstrual cycle, especially of women of reproductive age. Our primary aim in our study is to evaluate the effect of the vaccine on the menstrual cycle and if the vaccine has any effect on the menstrual cycle, what kind of changes this effect causes.

Highly communicable and virulent diseases, the ongoing threat of emerging infectious diseases, and the prospect of bio-terrorism have become part of the new reality for health care workers. SARS transmission has occurred despite the use of droplet, contact, and airborne precautions. Potential explanations for some of the episodes of "through-precautions" transmission include the possibility of contamination during removal of protective clothing. The recommended protective systems (PPS) for aerosol generating procedures set out by the US Center for Disease Control and Prevention (CDC) and the Ontario Ministry of Health and Long Term Care (MOHLTC) differ. The failure of a PPS may be associated with significant consequences in terms of the morbidity and mortality of front-line health care workers. The purpose of this study is to determine if a difference exists between the rate of self-contamination due to deficiencies in contact precautions for individuals wearing either the CDC or MOHLTC recommended PPS. Study participants will don one of the two recommended PPS, be "contaminated" with an indicator that becomes visible under ultraviolet light, and then assessed for contamination of clothing layers and skin after removal of the PPS. They will then repeat the procedure using the other PPS.

The new Severe acute respiratory syndrome coronavirus (SARS-CoV-2) named coronavirus disease 2019 (COVID-19) is currently responsible for a pandemic spread of febrile respiratory infections, responsible for a veritable global health crisis. In adults, several evolutionary patterns are observed: i) a/pauci-symptomatic forms; ii) severe forms immediately linked to rare extensive viral pneumonia; and iii) forms of moderate severity, some of which progress to secondary aggravation (Day 7-Day 10). Children can be affected, but are more rarely symptomatic and severe pediatric forms are exceptional. Like some other coronaviruses (SARS-CoV and Middle East respiratory syndrome coronavirus (MERS-CoV)), these differences in clinical expression could be based on a variability in the immunological response, notably either via inhibition of the type I interferon (IFN-I) response, or on the contrary an immunological dysregulation responsible for a "cytokine storm" associated with the aggravation. Little is known about the impact of these innate immune response abnormalities on the adaptive response. In addition, certain genetic factors predisposing to a state of "hyper-fragility" and certain viral virulence factors could also be predictive of the clinical response. In this context, the main hypothesis is that the virological analysis and the initial biological and immunological profiles are correlated with the initial clinical presentation of COVID-19 infection. In particular, children forms and pauci-symptomatic disease in adults may be linked to a more robust innate immune response, including better production of IFN-I.

While many people with COVID-19 suffer from respiratory disease, there is growing evidence that the virus also affects other organs. The purpose of this study is to better understand the effects of COVID-19 on the lungs and other organs. The study investigators have developed new techniques in Magnetic Resonance Imaging (MRI) to scan the lungs, heart, brain and liver. The study investigators hope to learn more about how the virus causes inflammation in these organs and how this inflammation changes over time as people recover from COVID-19 illness. The study aims to enroll 228 people in Alberta. Participants will undergo one or more MRI scans and have blood testing at one or more time points to assess for inflammation, kidney function, liver function and possible heart injury. Participants will also undergo testing to assess sense of smell, cognition (thinking and memory), spirometry (breathing test for lung function) and and exercise tolerance (walk test). The study investigators hope this study will help us learn more about the long-term risks of COVID-19 disease.

In this randomized double blind Phase 3 clinical trial we will study the efficacy and safety of oral polio vaccine with and without NA-831 versus placebo.

The aeronautical community was also affected and greatly impacted economically and socially by the Covid-19 pandemic. Away from the acute phase, the epidemiological impact and the consequences of this disease within the French aviation flight crew population must be assessed. This study is aimed at providing original epidemiological data among civil and military aircrew, prior to possible prevention strategies or countermeasures to optimize risk management in terms of aviation safety and to promote, if necessary, future targeted studies.