BREAKING—the Pfizer #COVID19 vaccine is now approved in the US. But let’s not forget Dr Katalin Karikó, the pioneer Hungarian-American immigrant scientist who persevered for 40 years to bring mRNA to the 🌍. She will for sure win the Nobel Prize someday. https://t.co/GxXX2qms3T https://t.co/bBvswdS0Hb