#Act4 LabAnimals Project Syndicate reports that the vaccine advocacy group 1Day Sooner published an open letter last July to urge US regulators to permit and begin to prepare for “human challenge” vaccine trials, in which fully informed volunteers would be injected with potential vaccines and exposed to the novel coronavirus virus. 'Human Challenge study' infecting informed healthy volunteers with COVID-19 to begin in 2021 9 November 2020 Eurogroup for Animals
