Posted in Web COVID-19 Vaccine: Johnson & Johnson Trial Paused Amid … January 31, 2021 The Johnson & Johnson vaccine candidate was the fourth participant in the Trump administration’s Operation Warp Speed program to move into phase 3. It has the benefit of not needing to be frozen … https://www.npr.org/sections/coronavirus-live-updates/2020/10/13/923225994/johnson-johnson-vaccine-trial-paused-due-to-unexplained-illness-in-participant