The technologies used in all three vaccines authorized by the FDA were already years in development when #COVID19 struck the world. Scientists continually prepare for infectious disease outbreaks and their challenges so they can react quickly. https://t.co/cRrIJZsJzQ
- COVID-19 Update from the CDC – June 16 2021 13:15:07
- COVID-19 Update from the CDC – June 16 2021 15:00:48