
Essential Amino Acid Supplementation in Older Adult COVID-19 Patients
Covid19A 4-week treatment of essential amino acids or placebo to participants with: 1) negative COVID-19 test with exposure, or 2) positive COVID-19 test and no or mild symptoms. The study team will measure change in symptoms. Participants will complete symptom surveys for 4 weeks and once at 8 and 12 weeks as well as pre- and post-assessments.

Mucosal Immunity in Terms of SARS-CoV-2 Antibodies in Saliva After COVID-19 Infection and Vaccination...
Covid19The Primary Objective of This Single-center Study is to Investigate the SARS-CoV-2 Spike Glycoprotein RBD Antibody Concentration in Saliva and Serum in Healthy Non Vaccinated and Non-SARS-CoV-2 Infected, COVID-19 Convalescents, Persons Vaccinated With Pfizer-BioNTech BNT162b2, Moderna mRNA-1273 or AstraZeneca ChAdOx1 nCov-19 AZD1222 Vaccines, and Convalescent COVID-19 Patients That Have Subsequently Been Vaccinated. A Potential Difference in the Immunoglobulin Concentrations of the Pfizer-BioNTech BNT162b2 Vaccine, Moderna mRNA-1273 vaccine and the AstraZeneca ChAdOx1-S Vaccine Will be Uncovered. This Knowledge About the Mucosal Immunity Will be Important for Further Designing of Vaccine Strategies.

A Study to Test Whether BI 767551 Can Prevent COVID-19 in People Who Have Been Exposed to SARS-CoV-2...
COVID-19This study is open to adults living with a person who has tested positive for the coronavirus SARS-CoV-2. People who do not have symptoms of COVID-19 can take part in this study. The study is done to find out whether a medicine called BI 767551 can prevent COVID-19. BI 767551 is an antibody against the coronavirus SARS-CoV-2. Participants are put into 3 groups randomly, which means by chance. 1 group gets BI 767551 via an inhaler and placebo as an infusion 1 group gets BI 767551 as an infusion and placebo via an inhaler 1 group gets placebo both via an inhaler and as an infusion All participants get study medicine once at study start and after 1 week. Placebo inhaler and infusion look like BI 767551 inhaler and infusion but do not contain any medicine. Participants are in the study for about 3 months. During this time, they visit the study site about 10 times. About 7 of the 10 visits can be done at the participant's home. Participants are regularly tested for the coronavirus SARS-CoV-2. The doctors check whether the participants have been infected with the coronavirus and whether they have symptoms. The results are compared between the treatment groups. The doctors check the health of the participants and note any health problems that could have been caused by BI 767551.

Asymptomatic COVID-19 Trial
SARS-CoV-2 InfectionThe coronavirus disease-2019 (COVID-19) is spreading throughout the United States. While there are no known therapies to treat those who have become sick, there have been some reports that a medication currently used to treat rheumatoid arthritis, lupus, and malaria (Hydroxychloroquine sulfate, also known as Plaquenil) may help to lessen the chance or severity of illness, especially if combined with a medicine that treats other kinds of infections (Azithromycin, also known as Zithromax or Zmax or Zpak). There are some people who test positive for the virus but who are otherwise not ill. Current standard of care is to advise these people to self-monitor but no treatment is offered. It is not known how many of these individuals will remain symptom free, and how many will become sick or how severe those symptoms will be. This study will randomize those people who do not have symptoms into one of three treatment plans 1) Hydroxycholoquine and Azithromycin, or 2) no active medication (placebo). All participants will be followed for 2 months. The study will determine if there is any benefit to those who are asymptomatic to taking taking Hydroxychloroquine sulfate in combination with Azithromycin, or if there is no benefit from taking these medications.

Neurodegeneration Markers and Neurological Course in Severe Covid-19 Infection
COVID-19 InfectionEncephalitisEmergence of Covid-19 virus is associated with high frequency of extremely severe clinical pictures, with minor signs of CNS impairment (e.g. anosmia, headache). Since neurotropism is a common feature of coronavirus infection in animals, the investigators examine if indirect signs of CNS lesion are observed in association with severe Covid-19 infection.

Hyperbaric Oxygen Therapy (HBOT) as a Treatment for COVID-19 (COVID-19) Infection
COVID-19Patients who meet inclusion criteria will be randomized into treatment vs control group. Treatment groups will undergo Hyperbaric Oxygen Therapy (HBOT) and compared to the control group.

Descriptive and Evaluation Study of the Use of Pulmonary Ultrasound in the Initial Management of...
Pregnant Women Suspected of COVID-19Cohort prospective study. Objectives : Primary objective: To describe the lung ultrasound lesions in pregnant women in case of suspected or confirmed COVID-19 Secondary objectives: To compare the lung ultrasound lesions with chest Computed Tomography -scanner (CT-Scan) lesions To evaluate the performances of the lung ultrasound to diagnose COVID-19 in pregnant women To evaluate predictive value of different lung ultrasound lesions for intensive care unit admission of pregnant women with suspected or confirmed COVID-19 To describe the pregnancy issues of the study population Course of the study: Inclusion of pregnant suspected of having COVID-19 and cared following the service protocol Performing of lung ultrasound at bedside in labor ward or in COVID unit Primary outcome: Lung ultrasound lesions (and corresponding score) at the moment of the initial management of pregnant women suspected or confirmed with COVID-19 (having a nasopharyngeal Reverse Transcription Polymerase Chain Reaction (RT-PCR) SARS-CoV-2 and a chest CT-scan)

Analysis of the Immune Parameters of COVID-19 Infection in Patients With Multiple Myeloma
Multiple MyelomaCovid19Among all MM patients included in the cohort at the time of diagnosis of SARS-CoV-2 infection, blood samples will be collected at inclusion, at time of the infection acute phase in the most severe cases (when admitted in intensive care units), and at recovery. The following immune function tests will be evaluated, gammaglobulin measurements, lymphocytes counts, B, T, and NK cells analyses by cytometry, including exhaustion analyses. In addition, T cell repertoire sequencing looking for SARS-CoV-2- specific T cells, and serologies, will be evaluated at recovery and 6 months after MM treatment re-initiation.

Post-COVID-19 Condition: Observational Study in Vietnam
Post COVID-19 ConditionThe primary objective of this study is to estimate the prevalence of the post-COVID-19 condition in confirmed mild, moderate, and severe COVID-19 adult patients in Hai Phong, Vietnam.

Brain Function Changes Following COVID-19 Infection
COVID-19The global COVID-19 pandemic has now led to millions of infections worldwide. It produces long-lasting changes in the general physiology of multiple organs, including the brain. Thus, this study aimed to comprehensively understand the cortical excitability and neuropsychological behavior changes in patients following SARS-CoV-2.