View clinical trials related to SARS-CoV-2 Infection.
Filter by:The study is a randomized, double-blind, positive-controlled Phase II booster study. It will evaluate the immunogenicity and safety of SCTV01E compared with mRNA-1273 (the mRNA COVID-19 vaccine from Moderna) in population aged 12-17 years old and previously vaccinated with 2 doses of mRNA COVID-19 vaccine.
This study seeks to explore immunological mechanisms in patients with Multisystem Inflammatory Syndrome in Children (MIS-C) to improve the understanding of this pathogenesis of this disease. In a cohort of MIS-C patients diagnosed during the Wild type, Alpha, Delta and Omicron waves, research samples will be analyzed for whole-blood RNA expression, proteomics, inflammatory cytokines, cellular immune populations, autoantibodies, as well as host genetic markers.
The study is a randomized, double-blind, positive-controlled Phase II booster study. It will evaluate the immunogenicity and safety of SCTV01E compared with Comirnaty.
The study is a randomized, double-blind, and positive-controlled Phase III booster study. It will evaluate the immunogenicity and safety of one dose of SCTV01C or SCTV01E as booster compared with either one dose of Sinopharm inactivated COVID-19 vaccine (Cohort 1) or one dose of Comirnaty (Cohort 2).
This is an observational study of pooled population-based samples in three Nordic countries. Country-specific data has already been analysed in previous studies in Sweden, Finland, and Norway. The primary objective is to examine the association between tobacco use, the risk of SARS-CoV-2 infection, and adverse Outcomes using pooled population-based samples.
This study will assess the safety and immunogenicity of a fourth dose (booster) of BNT162b2 when coadministered with SIIV compared to separate administration of the vaccines when given 1 month apart (SIIV followed by BNT162b2), in participants who have received 3 prior doses of 30 µg BNT162b2, with the third dose being at least 90 days before Visit 1 (Day 1). - Healthy adults 18 through 64 years of age will be randomized 1:1 to either the co-administration group, or the separate administration group - The duration of the study for each participant will be approximately 2 months - There are 3 scheduled study visits each about 1 month apart - The study will be conducted in New Zealand and Australia.
The objective of the study is to evaluate the immunogenicity and safety of SCTV01C or SCTV01E, comparing the immunogenicity data against Beta (B.1.351), Delta (B.1.617.2), Omicron (B.1.1.529) and other variants with Sinopharm inactivated COVID-19 vaccine or mRNA vaccine.
The objective of this study is to evaluate the effectiveness of SCTV01E in participants aged ≥18 years.
The main aim of this study is to evaluate the efficacy of S-217622 versus placebo among outpatient adults with mild and moderate COVID-19 starting intervention within 3 days of symptom onset.
This is a Randomized, Double-blinded, Active-controlled Study to evaluate the Safety, Tolerability and Immunogenicity of VLA2001 in participants of ≥2 to 12 years. In total 1720 participants will receive either VLA2001 or active Comparator.