To expand the access and delivery of COVID-19 Vaccines in Africa (ECOVA), theinvestigators will conduct a phase 3, individually randomized, observer-blind, controlled(influenza vaccine) trial to evaluate the safety and efficacy of the BBIBP-CorV vaccineagainst any severe acute respiratory syndrome 2 (SARS-CoV- 2) infection among adults 18years and older. The BBIBP-CorV vaccine is an inactivated SARS-CoV-2 vaccine (Vero cell)manufactured by the Beijing Institute of Biological Products (BIBP), China NationalBiotec Group (CNBG), Sinopharm, Beijing, People's Republic of China and receivedemergency use authorization (EUA) from World Health Organization (WHO).

The purpose of this double-blind, randomized, controlled study is to assess safety,reactogenicity, and preliminary immunogenicity of 202-CoV at multiple dose levels,administered as 2 injections (i.m) at 28 days apart in adult subjects 18 years of age andabove.

This phase 2 trial studies the immune response to GEO-CM04S1 (previously designated asCOH04S1) compared to standard of care (SOC) mRNA SARS-COV-2 vaccine in patients withblood cancer who have received stem cell transplant or cellular therapy.GEO-CM04S1 belongs to a category called modified vaccinia Ankara (MVA) vaccines, createdfrom a new version of MVA, called synthetic MVA. GEO-CM04S1 works by inducing immunity(the ability to recognize and fight against an infection) to SARS-CoV-2. The immunesystem is stimulated to produce antibodies against SARS-CoV-2 that would block the virusfrom entering healthy cells. The immune system also grows new disease fighting T cellsthat can recognize and destroy infected cells. Giving GEO-CM04S1 after cellular therapymay work better in reducing the chances of contracting coronavirus disease 2019(COVID-19) or developing a severe form of COVID-19 disease in patients with blood cancercompared to SOC mRNA SARS-CoV-2 vaccine.

In December 2019, viral pneumonia caused by a novel beta-coronavirus (Covid-19) broke outin Wuhan, China. Some patients rapidly progressed and suffered severe acute respiratoryfailure and died, making it imperative to develop a safe and effective vaccine to treatand prevent severe Covid-19 pneumonia. Based on detailed analysis of the viral genome andsearch for potential immunogenic targets, a synthetic minigene has been engineered basedon conserved domains of the viral structural proteins and a polyprotein protease. Theinfection of Covid-19 is mediated through binding of the Spike protein to the ACEIIreceptor, and the viral replication depends on molecular mechanisms of all of these viralproteins. This trial proposes to develop and test innovative Covid-19 minigenesengineered based on multiple viral genes, using an efficient lentiviral vector system(NHP/TYF) to express viral proteins and immune modulatory genes to modify dendritic cells(DCs) and to activate T cells. In this study, the safety and efficacy of this LV vaccine(LV-SMENP) will be investigated.

In December 2019, viral pneumonia (Covid-19) caused by a novel beta-coronavirus(SARS-CoV-2) broke out in Wuhan, China. Some patients rapidly progressed and sufferedsevere acute respiratory failure and died, making it imperative to develop a safe andeffective vaccine to treat and prevent severe Covid-19 pneumonia. Based on detailedanalysis of the viral genome and search for potential immunogenic targets, a syntheticminigene has been engineered based on conserved domains of the viral structural proteinsand a polyprotein protease. The infection of Covid-19 is mediated through binding of theSpike protein to the ACEII receptor, and the viral replication depends on molecularmechanisms of all of these viral proteins. This trial proposes to develop universalvaccine and test innovative Covid-19 minigenes engineered based on multiple viral genes,using an efficient lentiviral vector system (NHP/TYF) to express viral proteins andimmune modulatory genes to modify artificial antigen presenting cells (aAPC) and toactivate T cells. In this study, the safety and immune reactivity of this aAPC vaccinewill be investigated.