Everest Medicines and Providence Therapeutics ("Providence") announced that their COVID-19 vaccine, PTX-COVID19-B, has been recommended by an independent advisory group to be part of the WHO Solidarity Trial Vaccines ("STV") clinical trial. PTX-COVID19-B is a potentially best-in-class lipid nanoparticle-formulated mRNA vaccine with strong immunogenicity and tolerability profiles. The STV is an international, randomized clinical trial designed to rapidly evaluate the efficacy and safety of promising new candidate vaccines. Vaccines are selected by an independent vaccine prioritization advisory group composed of leading scientists and experts based on pre-defined criteria, including their safety and proven potential for effectiveness, stability of the vaccine, whether they can be produced quickly for global distribution, and the ease with which they can be given to individuals.