View clinical trials related to Covid19.
Filter by:The primary purpose of this study is to assess the safety, reactogenicity, and humoral immune response of Ad26.COV2.S administered intramuscularly (IM) as a 1-dose schedule or as a 2-dose schedule (56-day interval) in adolescents.
This is a phase III, randomized, two-armed, double-blind, placebo-controlled trial designed to evaluate the efficacy and safety of a candidate adjuvanted recombinant SARS-CoV-2 spike (S) protein subunit vaccine (SpikoGen) produced by CinnaGen Co. 16,876 adult individuals receive either SARS-CoV-2 recombinant spike protein (25 µg) with Advax-SM adjuvant (15 mg) or saline placebo in a 3:1 ratio. The randomization is stratified by age (from 18 to under 40 years of age or from 40 to under 50 years of age). The injection is given in two doses with a 21-day interval in the deltoid muscle of the non-dominant arm. Participants will be followed up for six months after the second dose of the study intervention. Study hypotheses include: 1. The adjuvanted COVID-19 vaccine candidate significantly reduces the risk of symptomatic COVID-19 in adult subjects. 2. The adjuvanted COVID-19 vaccine candidate significantly reduces the risk of severe COVID-19 in adult subjects. 3. The adjuvanted COVID-19 vaccine candidate is safe and tolerable in adult subjects.
A randomized, double-blind, placebo -controlled, phase IIb clinical trial to evaluate the efficacy, safety and immunogenicity of one or two doses of Recombinant Novel Coronavirus Vaccine (Adenovirus Type 5 Vector) in adults 18 years of age and older, living with HIV, on stable treatment, and virologically suppressed for at least 6 months Protocol number: FH-58
This is a pilot study of a single-center, blind, randomized, placebo-controlled, parallel-group study testing for the efficacy and safety of Methylene blue when administered topically as a 0.02% solution for nasopharyngeal and oropharyngeal irrigation in COVID-19 patients requiring hospitalization.
This will be an open label, prospective, multi-center, comparative, interventional study to evaluate safety and efficacy of Artemisinin 500 mg in subjects with mild to moderate COVID-19. Initially subjects having mild to moderate COVID-19 will be screened as per predefined eligibility criteria for the study. Eligible 120 subjects will be enrolled to receive treatment with Artemisinin and SOC (Standard of Care as per CLINICAL MANAGEMENT PROTOCOL: COVID-19, Government of India Ministry of Health and Family Welfare Directorate General of Health Services (EMR Division)) or SOC. Subjects will be randomized in 2:1 ratio. Group 1 will have 80 subjects and Group 2 will have 40 subjects.
This will be a prospective observational study of lactating mothers who are planning to, have scheduled or have received vaccination against SARS-COV-2 (COVID-19 vaccine). Mothers may have delivered at Mount Sinai Hospital or may be from the general public recruited by social media or word of mouth. As the study participants will be lactating mothers, they will not be under the care of the investigators. Due to lack of information, we are unsure of an appropriate sample size but envision we will recruit at least 10 women each immunized with the approved mRNA vaccines (e.g. Pfizer-BioNTech and Moderna COVID-19 vaccines) and in the future at least two other vaccines (e.g. Oxford-AstraZeneca) as they are approved and become available. Milk samples will be analyzed for the presence of antibody to SARS-CoV-2 using the Anti-SARS-CoV-2 ELISA (IgG and IgA). These analyses will be conducted in the Department of Microbiology at Sinai Health following validation of the procedures in human milk.
Follow-up study of Coronavirus disease 2019 (COVID-19) survivors has rarely been reported. We aimed to investigate longitudinal changes in the characteristics of COVID-19 survivors after discharge.
This trial consists of three parts, Part A, Part B, and Part C, and will evaluate the safety and immunogenicity of a third booster injection of the multivalent vaccine BNT162b2 (B.1.1.7 + B.1.617.2), and the safety and immunogenicity of a third booster injection of the monovalent vaccine BNT162b2 (B.1.617.2) or BNT162b2 (B.1.1.7), in participants who have received two doses of the parent vaccine BNT162b2 at 30 µg, at least 6 months after the second dose of BNT162b2. It will also evaluate the safety and immunogenicity of a three-dose regimen of BNT162b2 (B.1.1.7 + B.1.617.2) in participants who have not received prior Coronavirus Disease 2019 (COVID-19) vaccination. In addition, the safety and immunogenicity of BNT162b2 (B.1.1.529.1) or BNT162b2 given as a third or fourth vaccine dose to RNA COVID-19 vaccine-experienced participants with history of SARS-CoV-2 infection will be evaluated and contrasted with the natural immune response reached after infection with the SARS-CoV-2 Omicron variant.
Utilizing the crosstalk among aerosolized phenformin, methylene blue, photodynamic therapy , zinc and potassium for treating severe COVID-19 infection and its inflammatory complication Amr Ahmed(1), Mahmoud Elkazzaz(2), Tamer Haydara(3), and Abdullah Alkattan(4) 1. Director of tuberculosis program Ghubera, public health department ,First health cluster ,Ministry of health ,Saudia Arabia. 2. Department of chemistry and biochemistry, Faculty of Science, Damietta University, Egypt. 3. Department of Internal Medicine, Faculty of Medicine, Kafrelsheikh University, Egypt. 4. Ministry of Health, Riyadh, Saudi Arabia. SARS-CoV-2 represents the largest current health challenge for the society. Moreover, numerous variants of the virus that causes COVID-19 are being tracked in the United States and globally during this pandemic. Here, we will use combination therapy which involve agents with significant activity and different mechanisms of action against covid-19 and its inflammatory complication. Excessive activities of cysteinyl cathepsins (CysCts) contribute to the progress of many diseases. however, therapeutic inhibition has been problematic. Cathepsin L are crucial in terms of the endocytosis by cleaving the spike protein, which permits viral membrane fusion with endosomal membrane, and succeeded by the releasing of viral genome to the host cell. Thereby, inhibition of cathepsin L may be advantageous in terms of decreasing infection caused by SARS-CoV-2. It is well known that zinc (Zn) possesses a variety of direct and indirect antiviral properties, which are realized through different mechanisms. Administration of Zn supplement has a potential to enhance antiviral immunity and to restore depleted immune cell function, in particular in immunocompromised patients. It has been found that Zn 2+ deficiency leads to an exaggerated activity of Cysteine cathepsin increasing the autoimmune/inflammatory response. . Zn2+ is a natural inhibitor of proteases with CysHis dyads or CysHis(Xaa) triads. cysteine protease Cathepsin L (CatL) involvement with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and COVID-19 from different points of view. At this purpose Zn 2+ metal can be safely combined with phenformin a drug that increases the anti-proteolytic effect of endogenous Zn 2+ lowering the excessive activity of some CysCts.; A study found that phenformin-Zn2+ complex is identified as a modifiable pharmacophore for synthesis of therapeutic CysCt inhibitors with a wide range of potencies and specificities. Phenformin stabilizes a "Zn2+ sandwich" between the drug and protease active site. Additionally, phenformin was found to be potent inhibitor of IL-6 R, with phenformin (100 µM) treatment for 48 h, decreased IL-6R expression in ANBL6, RPMI, U266, MM1S, and JJN3 was 5.51 (p = 0.0025), 3.03 (p = 0.0005), 1.55 (p < 0.05), 2.09 (p = 0.0082) and 1.19-fold, respectively. Furthermore, phenformin was discovered to potentially and strongly bind to ACE2 receptors, according to a docking research being conducted by the principle investigators of this clinical study therefore, Phenformin is expected to potentially attach to ACE2 receptors and lead to its downregulation, an inhibitory mechanism which may combat and block COVID-19 infection in lung epithelial cells. Phenformin may induce lactic acidosis therefore according to the principal investigator The phenformin will be utilized as aerosolized by inhalation for COVID-19 treatment and this may be an effective novel treatment strategy that would limit the risk of systemic side-effects associated with biguanides due to the low inhaled dose. In addition, we will use aerosolized phenformin in combination with methylene blue. A study found that a very marked improvement in lactate and pyruvate concentrations occurred within six hours of the beginning of méthylène blue administration in human . It has been known for some time that méthylène blue is a moderately efficient hydrogen acceptor in several enzyme sys¬ tems and significantly reduce oxidative stress by scavenging ROS. Moreover, Methylene Blue has antiviral activity and was found to Inhibit the Spike-ACE2 Protein-Protein Interaction-a Mechanism that can contribute to its Antiviral Activity Against COVID-19 For many reasons, methylene blue is a promising drug for an active treatment against SARS-CoV-2 . Since methylene blue can work as a photosensitizer, photodynamic therapy as an antiviral treatment has great potential in the treatment of COVID-19.. This clinical study will investigate the effectiveness of SARS-CoV-2 infected people treatment using methylene blue and the following photodynamic therapy after that our clinically approved patients will receive phenformin and zinc . But methylene blue may lead to lowering in potassium concentration.Therefore, we will add potassium supplement to this combination.
This study is a randomized, double-blinded, and placebo controlled phase Ⅰ clinical trial of the SARS-CoV-2 inactivated vaccine to evaluate the safety and immunogenicity of the experimental vaccine in healthy population aged 3 to 17 years.