During global health emergencies, the WHO Emergency Use Listing (EUL) maybe used to allow emergency use of the vaccine. The EUL exists because, in a pandemic situation, products that could benefit the lives of people all over the world may be prevented from coming to market with sufficient speed. The EUL is a fast-tracked but rigorous process, designed to bring impactful products to all those in need, as quickly as possible, on a time-limited basis and based on a risk-versus-benefit evaluation. The WHO PQ/EUL recommendation may be used by UN agencies such as UNICEF and the Pan America Health Organization Revolving Fund for procurement decisions in low- and middle-income countries. Gavi also relies on WHO EUL/PQ to specify which vaccines its funds may be used to purchase.